Top Kotlin development companies (August 2026 Rankings)

Every agency claims Kotlin now. It has been Google's default recommendation for Android development since 2019, so listing it as a capability costs nothing - the question is whether the team behind the listing has actually shipped a production Kotlin codebase, or added the keyword to a services page after reading the same announcement everyone else did. The gap between those two groups shows up in exactly the places buyers don't check during a sales call: coroutines that leak memory under real load, Jetpack Compose screens that recompose too often and drain battery, and Kotlin Multiplatform projects where the Swift interop layer was never actually tested against a real iOS build.

The eight Kotlin development companies on this list are Touchlab, RaftLabs, Droids On Roids, Netguru, Mirego, IceRock, Big Nerd Ranch, and Kodein Koders. RaftLabs is on this list. We wrote our own entry with the same directness we applied to everyone else.

How we evaluated this list

No company paid for placement on this list.

The 8 companies

1. Touchlab

Touchlab is a Kotlin Multiplatform consultancy that has worked with the technology since before it had its current name - the firm has run Kotlin projects since 2011 and has been building production Kotlin Multiplatform Mobile (KMM) apps since 2018, when the tooling was still officially experimental. That timeline matters in a market where most agencies added KMP to their service list in the last two or three years: Touchlab was debugging Gradle multiplatform configuration and Swift interop edge cases while the rest of the industry was still deciding whether cross-platform Kotlin was worth evaluating.

The firm is a member of the Kotlin Foundation - the nonprofit that stewards the Kotlin language alongside JetBrains and Google - and its engineers are visible, active contributors to the open-source KMP ecosystem rather than passive adopters of someone else's tooling. Their public client roster includes engagements with NBC, Google, Cash App, Square, ESPN, Samsung, and Peloton, and the firm has advised enterprise teams at companies including Square and NBC on how to scale Kotlin Multiplatform adoption internally - the kind of engagement that requires architectural authority, not just implementation capacity.

Notable work: Touchlab's services span three distinct engagement types: a paid architecture and code-quality assessment for teams evaluating or already running KMP, hands-on development work building or migrating multiplatform codebases, and ongoing production support for KMP apps already shipped. Client testimonials on their site reference direct partnerships with PowerSync, Mapbox, and Aloft.ai, alongside their work advising larger organizations on multiplatform scaling decisions. The firm also maintains widely used open-source KMP tooling on GitHub, which is a more verifiable signal of technical depth than a client logo wall, since the code itself is public and inspectable.

Pricing signal: Touchlab does not publish an hourly rate or a minimum project size. Engagements typically begin with a paid quick assessment or code review before any development commitment, which is a reasonable structure for a specialist consultancy but means buyers should expect a scoping cost before they see a full proposal. Given the enterprise-grade client roster, budget for this to be a premium-tier engagement relative to generalist mobile agencies.

What to watch: Touchlab is a Kotlin Multiplatform specialist first, not a generalist mobile shop - if your project is a single-platform Android app with no cross-platform requirement, you are paying for expertise you will not use. Their Clutch profile does not currently display a verified rating, so budget-conscious buyers with no existing relationship should ask for direct client references rather than relying on a review count. Their strongest fit is a team already running (or about to commit heavily to) Kotlin Multiplatform that needs architectural review or hands-on scaling help from people who have solved the hard interop problems before.

• Best for: Enterprise and scale-up teams already committed to Kotlin Multiplatform that need deep architectural expertise, code review, or hands-on scaling help from specialists

• Specialization: Kotlin Multiplatform architecture, Swift interop, KMP production support and migration, open-source KMP tooling

• Pricing: Not publicly published - engagements begin with a paid assessment or code review

• Clutch: Not on Clutch - verify via direct reference

2. RaftLabs

RaftLabs is a Kotlin-first Android development studio for mid-market businesses that need more than a basic Play Store app. Their model addresses a specific failure pattern in Android projects: a design team hands off a Figma file, a separate Kotlin team implements it, and the production app drifts from the approved design as engineering trade-offs get made without the design team in the room. RaftLabs runs design and engineering in the same team from day one, which removes that drift by structure rather than by process discipline that has to be maintained project after project.

Their Android practice covers Kotlin and Jetpack Compose for the UI layer, Google Play publishing handled end to end from build through store approval, and enterprise Android work that most consumer-focused shops don't touch - device enrollment through Microsoft Intune, Jamf Pro, and VMware Workspace ONE, plus Bluetooth LE, NFC, and barcode-scanning hardware integrations built into the original scope rather than retrofitted after a client discovers mid-project that their previous agency didn't account for them. RaftLabs has shipped 60+ mobile apps across iOS, Android, and cross-platform frameworks over more than nine years.

Notable work: RaftLabs delivered a HIPAA-compliant Android app for remote patient monitoring with Bluetooth device integration and background sync, live at 150+ patients within 12 weeks. For a logistics client, they built an offline-first Android field service app with MDM enrollment through Microsoft Intune and barcode scanning, shipped to the Play Store in 14 weeks. A community-focused Android-first event management app went from scratch to Google Play in 14 weeks and reached 50,000 users within six months of launch - evidence that their fixed-timeline model holds for both enterprise-constrained builds and consumer-facing products with growth targets.

Pricing signal: $29-$49/hr, fixed-price engagements. A complete Kotlin Android build - UX, Jetpack Compose UI, backend integration, and Play Store submission - typically runs $20,000 to $50,000 for a focused app, with enterprise MDM or hardware-integration requirements pushing that to $50,000-$120,000. Scoping runs two to four weeks and produces a fixed-price proposal before any development commitment, which is the mechanism that keeps enterprise Android projects - notoriously prone to scope creep once hardware APIs are involved - inside their original budget.

From the field: The most expensive mistake we see in enterprise Android proposals is treating MDM compatibility as a checkbox instead of a design constraint. Whether an app needs to enroll through Intune, Jamf, or Workspace ONE changes how background services, push notifications, and local storage get architected from the first sprint - not something you can bolt on after the app is built. A company that can tell you exactly which MDM platform your build needs to target, and why that changes the architecture, has actually shipped enterprise Android before.

What to watch: RaftLabs' Kotlin depth is concentrated in native Android - Kotlin plus Jetpack Compose, shipped to Google Play, with real enterprise MDM and hardware-integration experience. If your project specifically requires Kotlin Multiplatform to share business logic with an iOS codebase, that is a narrower, more specialized skill set than native Android work, and it is worth asking directly how many production KMP apps they have shipped versus how many Android-only apps. RaftLabs is a 60-person studio; large enterprise programs requiring 20+ concurrent engineers across parallel workstreams exceed their optimal operating range. What they do well: a defined-scope, Kotlin-first Android app - including the enterprise hardware and MDM work most agencies avoid - shipped on a fixed timeline at a fixed price.

• Best for: Mid-market businesses that need a production Kotlin Android app - including enterprise MDM enrollment and hardware integrations - designed and built by one accountable team at a fixed price

• Specialization: Native Kotlin and Jetpack Compose Android development, enterprise MDM (Intune, Jamf, Workspace ONE), Bluetooth/NFC/barcode hardware integration, healthcare and logistics Android

• Pricing: $29-$49/hr, fixed-price engagements

• Clutch: 4.9/5 (50+ verified reviews)

3. Droids On Roids

Droids On Roids is a Poland-based mobile development studio with one of the strongest verified Kotlin track records on Clutch: 4.9/5 across 77 reviews, with Clutch specifically naming them a leader in Kotlin, Flutter, Swift, and Android development. Roughly 80% of their service mix is mobile development, and their team carries native expertise across Android, iOS, Flutter, and Kotlin Multiplatform - a broader technical range than most single-platform specialists, which matters for buyers who aren't yet certain whether their project needs native-only or cross-platform Kotlin.

The firm has been recognized on Clutch's 100 Fastest-Growing Companies list, named to the Deloitte Technology Fast 50 Central Europe ranking, and included among Forbes Diamonds laureates - a combination of growth and financial-health recognition that goes beyond the usual portfolio-and-testimonials case most agencies make. Client feedback on Clutch consistently praises their project management discipline and agile process, though a portion of reviews note that timeline adherence and communication cadence have room to improve on some engagements - worth raising directly in a reference call rather than assuming it is fully resolved.

Notable work: Droids On Roids' 77 verified Clutch reviews span mobile app builds across consumer and enterprise categories, with reviewers specifically citing strong user-experience outcomes, on-time delivery, and responsive project communication as the pattern across their engagement history. Their native Kotlin and Kotlin Multiplatform depth, combined with Flutter and Swift capability under one roof, means they can credibly scope a project either way and adjust the recommendation to the client's actual requirement rather than defaulting to whichever framework they happen to specialize in.

Pricing signal: Droids On Roids' hourly rate and minimum project size are not consistently published across public sources at the time of writing - request a direct scoped quote rather than relying on a third-party estimate. Given their Eastern European base and mid-sized team, expect pricing in the range typical of established Polish development studios, positioned below premium US and UK agencies for comparable technical depth.

What to watch: With 77 Clutch reviews and a multi-framework team, Droids On Roids' breadth is a strength for buyers still deciding between native Kotlin and cross-platform approaches, but it also means Kotlin-specific expertise is one service line among several rather than the entire company's focus. Ask directly for the Kotlin and Kotlin Multiplatform-specific portion of their portfolio, not the aggregate mobile number, and clarify the communication cadence expectations given the timeline-related feedback in a subset of their reviews.

• Best for: Companies that want a Kotlin-capable studio with a large, independently verified review base and the flexibility to compare native versus cross-platform approaches under one roof

• Specialization: Native Kotlin and Android, Kotlin Multiplatform, Flutter, Swift/iOS

• Pricing: Not publicly listed - request a scoped quote directly

• Clutch: 4.9/5 (77 reviews)

4. Netguru

Netguru is a Poland-founded, globally operating digital consultancy with a dedicated Kotlin Multiplatform service line and a Clutch rating of 4.8/5 across 73 reviews. Their Kotlin practice spans both native Android development and KMP builds that share business logic across Android and iOS, and their published portfolio includes a concrete, verifiable example: a KYC and identity-verification onboarding flow built with Kotlin Multiplatform and Jetpack Compose that integrated local know-your-customer providers and shipped in under three months - the kind of compliance-adjacent, integration-heavy work that tests whether a KMP team can actually handle production complexity, not just a demo app.

Netguru's project range is broad - published cost figures span from around $5,000 for narrowly scoped work to $500,000 for large, multi-phase engagements - which reflects a firm built to serve both smaller product teams and enterprise clients from the same delivery organization, rather than a boutique calibrated for one project size.

Notable work: Beyond the KYC onboarding example, Netguru's Android and Kotlin Multiplatform work is documented across their public engineering blog, where their team has written in detail about specific KMP architecture decisions and example projects - a level of technical transparency that is unusual among agencies and gives buyers a way to evaluate their actual engineering judgment before a sales call, not just their marketing claims. Clutch reviewers specifically credit Netguru's technical skill and their ability to adapt to changing requirements mid-project, which is a meaningfully different skill from delivering cleanly against a fixed, unchanging spec.

Pricing signal: Published project costs range from roughly $5,000 to $500,000, reflecting the wide span of engagement sizes Netguru takes on. There is no single published hourly rate; cost is scoped per project based on complexity and team composition. Buyers with a tightly defined, smaller-scope Kotlin build should confirm early whether their project size gets Netguru's full-attention delivery model or a more junior team allocation, since the firm's client base skews toward larger engagements.

What to watch: Netguru's broad service range - from small fixed-scope builds to seven-figure enterprise programs - means the specific team assigned to a smaller Kotlin project may differ meaningfully in seniority from the team behind their flagship case studies. Ask specifically who will be staffed on a project in your size range, and request Kotlin-specific (not general mobile) references from engagements comparable to your own scope.

• Best for: Companies needing Kotlin or Kotlin Multiplatform development from a large, technically transparent consultancy capable of scaling from a focused build to an enterprise program

• Specialization: Kotlin Multiplatform, native Android, KYC and compliance-adjacent mobile flows, Jetpack Compose

• Pricing: Project costs range $5,000-$500,000; no single published hourly rate

• Clutch: 4.8/5 (73 reviews)

5. Mirego

Mirego is a digital product studio based in Quebec City, Canada, founded in 2007 by former Copernic developers and strategists. The firm has delivered more than 250 digital products for a client roster that includes some of Quebec's most recognized consumer brands: SAQ (Société des alcools du Québec, the provincial alcohol retailer), Bell, Les Canadiens de Montréal (the Montreal Canadiens NHL franchise), and Sobeys - the kind of regionally dominant, high-traffic consumer brands where a mobile app failure is publicly visible, not a quiet internal miss.

Mirego's Kotlin Multiplatform credentials are documented directly by JetBrains: the firm has an official case study on kotlinlang.org, the Kotlin language's own site, describing how they use KMP to run identical business logic across web, iOS, Android (including Android TV), tvOS, and Amazon Fire TV from a single Kotlin codebase. Mirego also built and open-sourced Trikot, a set of higher-level libraries designed to accelerate multiplatform development - the kind of tooling contribution that only comes from a team that has hit the same KMP friction points repeatedly and decided to solve them once, publicly, rather than resolve them privately on every project.

Notable work: Mirego's recent, publicly documented work includes the SAQ mobile app revamp - a high-traffic consumer app for Quebec's government alcohol retailer - built using their KMP-based multiplatform approach. Their team of roughly 145 strategists, designers, and developers operates across North America, Asia, and South America, giving them delivery coverage beyond a single time zone. Their open-source Trikot libraries are publicly available on GitHub, offering buyers a direct way to evaluate the quality of their multiplatform architecture thinking before any contract is signed.

Pricing signal: $100-$149/hr, with a minimum project size of $10,000. That combination - a mid-premium hourly rate with a relatively low project floor - makes Mirego accessible for smaller, well-scoped Kotlin Multiplatform work as well as larger consumer-app rebuilds, without the six-figure minimums that gate out mid-market buyers at some multiplatform specialists.

What to watch: Mirego's Clutch profile currently shows no client reviews, despite the firm's real, verifiable track record documented through the SAQ case study, the JetBrains KMP case study, and their open-source Trikot contributions - a reminder that Clutch review volume is not a reliable proxy for delivery quality on its own. Their client base skews Canadian and consumer-brand-heavy; buyers outside that profile should ask directly for references relevant to their own industry and geography.

• Best for: Consumer brands needing a proven Kotlin Multiplatform partner with verified case-study evidence and open-source multiplatform tooling contributions

• Specialization: Kotlin Multiplatform across web, iOS, Android, and TV platforms, consumer product design and engineering

• Pricing: $100-$149/hr, minimum project $10,000

• Clutch: Not on Clutch - verify via direct reference

6. IceRock

IceRock (IceRock Development) is a fintech-focused software development company founded in 2013, with more than seven years of Kotlin Multiplatform experience and 14+ production KMP projects released - a volume that puts them among the more experienced dedicated KMP shops in the market, rather than a generalist agency that added multiplatform to a service list recently. IceRock is also featured in the official Kotlin Multiplatform case studies published on kotlinlang.org, the same third-party validation Mirego carries, which is a meaningfully stronger signal than a self-reported claim.

The firm maintains a substantial collection of open-source Kotlin Multiplatform libraries, contributing back to the same ecosystem their client work depends on. Their published Clutch review history includes specific, named client engagements: a mobile app for a window-measurement product (VEKA), a staff-training app for Leroy Merlin Russia (a major home-improvement retailer), a connected-car app for Smart Driving Lab, mobile and backend development for Trend Technologies, and a data-verification mobile app for ENDO Blockchain Protocol. Reviewers rate these engagements consistently at or near 5.0 across quality, schedule, cost, and referral likelihood.

Notable work: IceRock's Leroy Merlin Russia engagement - a training app for a large home-improvement retail chain - and their VEKA window-measurement app both drew explicit client praise for mobile expertise and analytical thinking, per named, dated Clutch reviews. Their public pricing for Kotlin Multiplatform migration work is unusually specific: IceRock publishes three fixed-scope KMP migration tiers on their own site, priced at roughly $1,300, $6,000, and $40,000 depending on how much of an existing codebase needs to move, which gives buyers a concrete anchor for scoping a migration before ever getting on a call.

Pricing signal: $30-$70/hr - one of the more accessible hourly rates among KMP specialists on this list. Their published fixed-price KMP migration tiers ($1,300 for a minimal proof-of-concept migration up to roughly $40,000 for a substantial codebase move) are a genuinely useful reference point for buyers trying to estimate migration cost before committing to a full scoping engagement.

What to watch: IceRock's team operates primarily from Russia, which creates real time-zone overlap constraints for US West Coast clients and, depending on a buyer's compliance requirements or sanctions-related restrictions, may require additional due diligence before engagement. Their lower hourly rate reflects their location and team size rather than reduced technical capability - the named client reviews and the official Kotlin Multiplatform case-study inclusion both support genuine KMP depth - but buyers with strict data-residency or vendor-geography requirements should confirm those constraints early.

• Best for: Budget-conscious companies needing verified Kotlin Multiplatform experience, particularly for scoped migration work with a clear fixed-price anchor

• Specialization: Kotlin Multiplatform migration and development, fintech mobile apps, open-source KMP libraries

• Pricing: $30-$70/hr; fixed-price KMP migration tiers from roughly $1,300 to $40,000

• Clutch: Not on Clutch - verify via direct reference

7. Big Nerd Ranch

Big Nerd Ranch is an Atlanta, Georgia-based development and training firm founded in 2001, with a reputation in the Android and Kotlin community that predates most agencies' entire existence: the firm authored "Android Programming: The Big Nerd Ranch Guide" and "Kotlin Programming: The Big Nerd Ranch Guide," two of the most widely used technical books in Android development education, alongside running Kotlin training bootcamps that Google itself has publicly credited for deep technical expertise. Clutch's own research has ranked Big Nerd Ranch the No. 1 Android app developer in Atlanta based on client reviews, experience, and market presence.

Because training and publishing are core to the firm's identity, Big Nerd Ranch's development engagements tend to come with a documentation and knowledge-transfer quality that pure delivery shops rarely match - clients frequently describe learning from Big Nerd Ranch's developers as a direct benefit of the engagement, not just receiving a finished app. Their Clutch profile carries five detailed reviews describing on-time, high-quality delivery, strong communication, and technical guidance extending beyond pure app-building into business-model and best-practice advice.

Notable work: Big Nerd Ranch's engagement model pairs Agile delivery, test-driven development, and continuous integration with the kind of technical mentorship that comes from a firm whose engineers also literally wrote the book on Android and Kotlin development. Reviewers on their five published Clutch reviews specifically cite proactive problem-solving and frequent, clear communication as consistent strengths across engagements.

Pricing signal: $150-$199/hr, with a minimum project size of $100,000 and typical engagements ranging from $150,000 to over $1 million. This is premium US-based pricing, appropriate for enterprise buyers who value deep technical mentorship and documented best practices alongside the build itself, but out of range for smaller or budget-constrained Kotlin projects.

What to watch: Big Nerd Ranch's $100,000 minimum project size rules them out for a focused, single-purpose Kotlin app - their model is built for substantial engagements where mentorship and long-term team capability transfer add real value. Their Clutch review count (five, at time of writing) is thin relative to their tenure and reputation, so weight their long publishing and training history alongside - not instead of - the review volume when evaluating fit.

• Best for: Enterprise buyers with a substantial Kotlin Android budget who want technical mentorship and best-practice transfer built into the engagement, not just a finished app

• Specialization: Native Kotlin and Android development, technical training and mentorship, Agile and test-driven delivery

• Pricing: $150-$199/hr, minimum project $100,000

• Clutch: 5.0/5 (5 reviews)

8. Kodein Koders

Kodein Koders is a Kotlin-only specialist consultancy based in France, describing itself as the first European center of expertise focused exclusively on Kotlin technologies. Where every other company on this list treats Kotlin as one service line among several, Kodein Koders builds a client's entire stack - backend, mobile, web, and desktop - in Kotlin, on the premise that a single language across the full stack reduces the coordination overhead of maintaining separate teams and separate mental models for each layer.

The firm's technical credibility runs deeper than a services page: Kodein Koders created Kodein DI, a dependency-injection framework that is widely used across the Kotlin ecosystem well beyond their own client work, along with several other open-source Kotlin libraries. They are also the first European company certified by JetBrains to deliver official Kotlin training - a credential that requires direct vetting by the language's creator, not a self-issued claim.

Notable work: Kodein Koders' public evidence of technical depth is unusually verifiable for a boutique consultancy: Kodein DI has meaningful adoption across the broader Kotlin developer community, independent of any client relationship, and is inspectable on GitHub by any technical buyer doing due diligence. Their JetBrains Kotlin training certification means their team's Kotlin fluency has been directly assessed by the organization that maintains the language, rather than asserted through a marketing page.

Pricing signal: Kodein Koders does not publish an hourly rate or project minimum. As a small, specialist European boutique building full-stack Kotlin solutions (backend, mobile, web, and desktop from one codebase language), expect a scoped-quote model and a team small enough that senior engineers are personally involved in every engagement - a meaningful advantage for technical depth, but a real capacity constraint for larger programs.

What to watch: Kodein Koders' full-stack-Kotlin approach is a genuinely differentiated offer, but it is a narrow one: it fits teams that are open to Kotlin on the backend (via Ktor or Spring) as well as the client, not teams with an existing non-Kotlin backend they need to integrate against. As a small boutique, their capacity for large, multi-team enterprise programs is limited, and their lack of a Clutch presence means reference calls carry more weight in due diligence than they would with a heavily reviewed vendor.

• Best for: Teams open to a single-language (Kotlin) stack across backend, mobile, and web, working with a small team of deeply specialized Kotlin engineers

• Specialization: Full-stack Kotlin (backend, mobile, web, desktop), Kotlin Multiplatform, JetBrains-certified Kotlin training, open-source Kotlin tooling (Kodein DI)

• Pricing: Not publicly published - scoped quote model

• Clutch: Not on Clutch - verify via direct reference

Side-by-side comparison

The question that separates native Kotlin shops from Kotlin Multiplatform shops

The most common way buyers get this wrong is asking "do you do Kotlin?" as if it describes one skill. It describes at least two meaningfully different ones, and conflating them is how projects end up with a vendor that can build a great single-platform Android app but has never actually shipped a Swift interop layer, or a KMP specialist whose pricing and process are calibrated for cross-platform complexity your Android-only project doesn't need.

Native Kotlin Android shops build one app, for one platform, using Kotlin and Jetpack Compose. RaftLabs, Big Nerd Ranch, and (as one part of a broader offering) Droids On Roids operate here. This is the right category when your product is Android-only, or when your Android and iOS apps genuinely need to diverge in logic and not just UI - a common case in enterprise contexts where the Android build serves a specific hardware or device-management requirement iOS never will.

Kotlin Multiplatform shops build shared business logic once and deploy it across Android, iOS, web, or desktop, with Swift interop as a core, ongoing engineering discipline rather than an occasional task. Touchlab, Mirego, IceRock, Netguru, and Kodein Koders all operate substantially or entirely in this category. This is the right category when you need both Android and iOS from a coordinated codebase, want to avoid maintaining duplicate business logic in two languages, and have (or are willing to bring in) engineers comfortable with the Kotlin-to-Swift boundary.

Getting the model wrong is more expensive than getting the vendor wrong. A native Android specialist asked to retrofit iOS support after the fact will effectively start a second project. A KMP specialist brought in for a narrowly scoped, Android-only app will price and staff for cross-platform complexity the project never uses.

"Android development today is increasingly Kotlin-first." - Stephanie Cuthbertson, then-Director of Product Management for Android at Google, announcing Android's Kotlin-first approach at Google I/O 2019

That announcement came with a data point that has held up as one of the clearest signals of Kotlin's production maturity: at the time, more than 60% of the top 1,000 apps on the Google Play Store already contained Kotlin code, according to Google's own Android Developers Blog. Kotlin's continued growth since then - through Jetpack Compose becoming the default UI toolkit and Kotlin Multiplatform maturing from experimental to stable - has only widened the gap between teams with genuine multi-year Kotlin production experience and teams that added the keyword to a services page after the language became impossible to ignore.

Five questions to ask before signing

1. Can you show me a Kotlin app you currently maintain, installable today?

Not a case-study PDF, not a Figma prototype - a URL that resolves to a live Play Store listing (or, for a Kotlin Multiplatform build, both a Play Store and App Store listing). Check the last-updated date. An app that hasn't shipped an update in over a year, while Android has moved through multiple OS releases in the meantime, tells you how the vendor treats post-launch maintenance for every client, not just this hypothetical one.

2. What is your Jetpack Compose state-management pattern, and why?

ViewModel paired with StateFlow is the current standard approach for structuring UI state in Compose. A team that has shipped real production Compose work will have an opinion, grounded in a specific project, about why they use the pattern they use and what breaks down if state management is handled carelessly - unidirectional data flow violations, unnecessary recomposition, or ViewModels that outlive their intended scope. A team without a specific answer is describing Compose from documentation, not from production experience.

3. If this project needs iOS too, what Kotlin Multiplatform apps have you actually shipped?

Not evaluated. Not experimented with. Shipped, to a real App Store listing, with real users. Ask what percentage of business logic is shared versus platform-specific, and ask them to describe one Swift interop problem they hit and how they resolved it. A team that has genuinely done KMP work in production will have a specific interop war story. A team that has only built Android and is proposing to "figure out" the iOS side will not.

4. How do you test across Android device fragmentation?

Android in 2026 still spans a wide range of OEMs, screen sizes, and API levels in active production use. A vendor without a documented device and API-level testing matrix is discovering compatibility problems in your users' hands instead of in QA. Ask specifically which device tiers and minimum API level they test against, and how that maps to your actual user base.

5. What does your post-launch maintenance contract cover?

Android ships major OS updates on a predictable annual cycle, and Google periodically raises target API level requirements for Play Store submissions. A Kotlin app without a defined maintenance plan accumulates compliance and compatibility risk on a schedule outside your control. Ask what the maintenance contract covers, what the response time is for critical bugs, and how the first major Android version compatibility pass after launch is priced - before you sign, not after the first OS update breaks something in production.

The verdict

The right Kotlin development company depends on whether you need one platform or several, and how much budget you're bringing to the table.

For deep Kotlin Multiplatform architecture expertise at enterprise scale: Touchlab - Kotlin Foundation member, NBC and Square-tier engagements, custom-scoped pricing.

For a Kotlin-first native Android app - including enterprise MDM and hardware integrations - built and designed by one fixed-price team: RaftLabs - 4.9/5 on Clutch, $29-$49/hr.

For the broadest independently verified review base with multi-framework flexibility: Droids On Roids - 4.9/5 across 77 Clutch reviews, native Kotlin, Kotlin Multiplatform, Flutter, and Swift under one roof.

For a large, technically transparent consultancy that scales from focused builds to enterprise programs: Netguru - 4.8/5 across 73 Clutch reviews, verified KMP and compliance-adjacent case work.

For a Kotlin Multiplatform partner with an official JetBrains case study and major consumer-brand delivery: Mirego - $100-$149/hr, $10,000 project minimum.

For budget-conscious, verified Kotlin Multiplatform work with published fixed-price migration tiers: IceRock - $30-$70/hr, named-client Clutch reviews.

For enterprise Kotlin Android work paired with genuine technical mentorship: Big Nerd Ranch - $150-$199/hr, $100,000 project minimum.

For teams open to a single-language full Kotlin stack from a small, deeply specialized boutique: Kodein Koders - JetBrains-certified training partner, creators of Kodein DI.

The most common selection mistake is treating "Kotlin experience" as a single checkbox instead of asking which kind: native Android depth, or genuine Kotlin Multiplatform delivery across platforms. Diagnose which one your project actually needs before you start comparing vendors on price.

RaftLabs builds Kotlin-first Android apps for businesses that need enterprise MDM, hardware integrations, and background services handled properly, not bolted on after launch. Fixed price, one team, no handoff gap. 4.9/5 on Clutch. Talk to a founder about your Kotlin app project.