Top Progressive Web App Development Companies (July 2026 Update)

Most businesses evaluating PWA development companies are comparing demos of apps that have never been stress-tested under production conditions. A PWA that gets a 95 Lighthouse score in a controlled sandbox environment is not the same as a PWA that maintains that score for 50,000 daily active users, handles offline editing and sync conflicts reliably, and behaves correctly across the iOS Safari restrictions that affect roughly half of all mobile users. The gap between a technically progressive web app and a production PWA that actually moves business metrics is where most engagements fall short.

Eight companies made this list: Simform, RaftLabs, Netguru, Cheesecake Labs, Arcweb Technologies, Cleveroad, Intellias, and Toptal. RaftLabs is included because they have shipped production PWAs for enterprise clients including T-Mobile, Cisco, and Lockheed Martin with documented Lighthouse scores above 95 and offline-first architecture that holds up under real-world conditions across iOS and Android. We evaluated every company on the same criteria.

How we evaluated this list

No company paid for placement on this list.

1. Simform

Simform's PWA practice sits inside a broader web and mobile development organization of over 1,000 engineers. For enterprise clients that need a single vendor to handle the full stack — backend APIs, database architecture, PWA frontend, service worker strategy, and ongoing maintenance — their team depth is a practical advantage. They have shipped PWAs for retail, e-commerce, logistics, and SaaS clients across US and European markets, and their engineering bench can run parallel workstreams without creating the bottlenecks that smaller studios encounter on complex engagements.

Their service worker implementations cover the full feature set: background sync for offline action queuing, push notifications through the Web Push API, cache-first and network-first strategies tuned per route, and installability prompts across Android and desktop. For iOS, they document known limitations upfront in their scoping process — specifically around service worker storage quotas and the lack of persistent push notification delivery before iOS 16.4 — and build client expectations into the statement of work before development begins. This kind of proactive disclosure separates experienced PWA vendors from those that discover iOS constraints mid-build.

The tradeoff is timeline. Simform's process is thorough and their QA cycle is rigorous, which means complex PWA projects tend to run 16-28 weeks rather than the 10-14 weeks a leaner shop might deliver. For fast-moving projects with a fixed launch date, a smaller specialist will execute faster. For enterprises that need the process confidence of a large, structured delivery organization, Simform is one of the most reliable options in this space.

Notable work: Retail e-commerce PWA with offline product catalog and cart persistence, logistics tracking PWA with background sync for field agents in low-connectivity environments, and SaaS product PWA with push notification onboarding sequences and installability across device types.

Pricing signal: $25-$49/hr. Typical PWA engagements run $50,000-$200,000 depending on complexity and backend integration scope. Fixed-price and T&M structures available.

What to watch: Large team size introduces coordination overhead on smaller engagements. Best suited for projects where the full-stack scope justifies the process investment and timeline.

• Best for: Enterprises that need a large delivery team for complex PWA work with backend integration

• Specialization: React, Angular, and Vue PWA with full-stack delivery

• Pricing: $25-$49/hr

• Clutch rating: 4.9/5

2. RaftLabs

RaftLabs approaches progressive web app development with an offline-first architecture stance by default — service workers are designed around the application's specific data access patterns from the first sprint, not added after the core features are built. This matters because the hardest part of PWA development is not installing a service worker library; it is designing the cache invalidation strategy around real user behavior so the app remains accurate and useful when the user is offline or on a 2G connection. Most PWA vendors treat offline support as a feature. RaftLabs treats it as an architectural constraint that shapes every decision from the beginning.

They have delivered production PWAs for clients including T-Mobile, Cisco, and Lockheed Martin. Their work spans customer-facing PWAs with push notification re-engagement campaigns, internal tools that field workers use in areas with intermittent connectivity, and SaaS product interfaces that are installable and function identically across iOS and Android. Their standard Lighthouse score target for production delivery is 95 or above — not as a vanity metric, but because it correlates with real improvements in bounce rate, time-on-site, and conversion. They test against real Core Web Vitals under production traffic, not against sandbox measurements.

RaftLabs' engagement model is fixed-price for scoped builds, with dedicated teams available for ongoing development. For a business that wants predictable cost, a team that has shipped real PWAs to real users, and measurable performance benchmarks as part of the delivery contract, they are the most direct fit on this list for mid-market and enterprise engagements.

Notable work: Field-worker PWA for Lockheed Martin with offline data entry and background sync, customer portal PWA for T-Mobile with offline notification queuing and cross-device installability, and internal operations tool for Cisco with progressive installation across device types and role-based offline data access. View case studies at raftlabs.co/portfolio.

Pricing signal: $29-$49/hr. Fixed-price PWA engagements typically run $30,000-$120,000 depending on offline complexity and integration scope. Delivered in 10-20 weeks with production-proven architecture.

What to watch: RaftLabs works best when clients have clear offline use cases identified upfront. Projects without a defined offline workflow still benefit from PWA architecture, but the scoping phase requires more discovery time to define the service worker strategy correctly.

• Best for: Mid-market and enterprise businesses that need production PWAs with measurable performance outcomes and fixed-price delivery

• Specialization: Offline-first PWA architecture, React and Next.js, cross-platform service worker design

• Pricing: $29-$49/hr

• Clutch rating: 4.9/5 (50+ reviews)

3. Netguru

Netguru is a Poznań-based digital product agency with over 800 specialists and a client list spanning fintech, health tech, and retail. Their PWA work is primarily React-based, and they bring a product development lens to the engagement — UX research, information architecture, and design system work happen before a line of code is written. For companies where the PWA needs to carry a differentiated user experience and not just functional offline capabilities, Netguru's design-first process is a genuine strength that most development-led shops do not offer.

Their European base means Polish, German, and UK clients typically get the time-zone overlap and communication patterns they prefer. US clients work in an asynchronous model with morning standups, which most product companies find manageable for the scope of a web product engagement. Their Clutch rating is consistently strong, with multiple reviews mentioning PWA-specific work including push notification sequences, cache invalidation strategies, and installability behavior across device types. They have shipped fintech PWAs with offline transaction history, health tech PWAs with push notifications for appointment reminders, and retail PWAs with offline product browsing and cart persistence.

Netguru is more expensive than nearshore or offshore vendors at $50-$99/hr, and their process investment means they are better suited for projects with a 12-week minimum runway than for fast-turnaround builds. For European companies or US product companies that want a boutique digital product partner with strong design credentials rather than a pure delivery shop, they are the strongest option at this tier.

Notable work: Fintech PWA with offline transaction history and receipt management, health tech PWA with push notifications for appointment reminders and background sync for form submissions, and retail product PWA with offline browsing and cart persistence across sessions.

Pricing signal: $50-$99/hr. PWA engagements typically run $60,000-$200,000. Fixed-price discovery phase followed by T&M build is their standard structure.

What to watch: Higher rates than offshore vendors. Best when the project scope includes UX research and design system work alongside PWA engineering, not just frontend development.

• Best for: European mid-market companies or US product companies wanting a design-led PWA partner

• Specialization: React-first PWA with product design and UX research

• Pricing: $50-$99/hr

• Clutch rating: 4.8/5

4. Cheesecake Labs

Cheesecake Labs is a Brazil-based product development studio with offices in Florianópolis and a distributed team across the Americas. Their work sits at the intersection of mobile and web — they are a React and React Native shop, which means their PWA architects understand mobile-first performance from both a native and a web perspective. For PWAs where the primary use case is mobile and the user behavior patterns look more like an installed app than a website, their cross-platform background is directly relevant.

Their PWA implementations focus on what makes the difference between a technically compliant PWA and one that users actually install and return to: navigation transitions that feel native, bottom navigation patterns with gesture recognition, offline states that present useful content rather than degraded fallbacks, haptic feedback on supported devices, and push notification timing that follows re-engagement best practices rather than generic send-on-schedule patterns. They have shipped PWAs in e-commerce, food delivery, and content subscription verticals where the competitive bar for user experience is set by native apps.

The tradeoff is team scale. Cheesecake Labs is a boutique shop — engagements with large parallel workstreams (multiple backend systems, simultaneous iOS and Android native apps alongside a PWA, complex enterprise integration requirements) can create delivery bottlenecks. They work best on focused PWA products where the scope is well-defined and the primary goal is user experience quality rather than backend complexity.

Notable work: E-commerce PWA with offline product catalog, wishlist persistence, and push notification abandoned-cart sequences, food delivery PWA with real-time order tracking and offline menu browsing, and content subscription PWA with background-sync content preloading and notification drip sequences.

Pricing signal: $50-$99/hr. PWA engagements typically run $40,000-$150,000 depending on interaction complexity and notification infrastructure. Fixed-price and T&M structures available.

What to watch: Smaller team capacity than large shops — not suited for multi-workstream enterprise engagements with heavy backend scope. Best for focused, product-first PWA builds with an emphasis on interaction quality.

• Best for: Consumer-facing product companies that want an app-like PWA experience with native interaction quality

• Specialization: React PWA with mobile-first UX design and React Native parity

• Pricing: $50-$99/hr

• Clutch rating: 4.9/5

5. Arcweb Technologies

Arcweb Technologies is a Philadelphia-based digital product firm with a strong track record in regulated industries — healthcare, energy, and financial services. For companies that need a US-based PWA partner, Arcweb is one of the few shops on this list where all team members are physically located in the US, which satisfies the vendor security requirements common in healthcare procurement, government contracting, and financial services technology audits.

Their PWA work in regulated industries carries specific requirements that general-purpose shops often underestimate. HIPAA-compliant data caching means you cannot store PHI in service workers without encryption and documented retention controls. Offline functionality for clinical environments must handle the case where a clinician edits patient data while the network is down without creating a privacy risk if the device is lost before sync completes. Accessibility compliance — WCAG 2.1 AA minimum — is a delivery requirement rather than an optional audit. Arcweb builds these requirements into the service worker architecture from day one, not as a compliance review before launch.

Their rates are higher than offshore vendors at $100-$149/hr, and typical engagements are sized accordingly. For healthcare SaaS, clinical workflow tools, energy sector dashboards, and financial services applications that require a US-based team and compliance documentation as part of the delivery contract, the premium is justified. For standard e-commerce or SaaS PWAs without compliance requirements, equivalent delivery quality is available at significantly lower cost from other vendors on this list.

Notable work: Clinical workflow PWA for a hospital network with offline patient record access and HIPAA-compliant service worker caching, energy sector dashboard PWA with real-time telemetry and offline fallback for field technicians in no-coverage zones, and financial services account management PWA with biometric authentication and compliant session management.

Pricing signal: $100-$149/hr. Typical engagements run $75,000-$250,000. US-only team with both fixed-price and T&M structures available. Compliance documentation included in delivery.

What to watch: Premium rates are not suited for early-stage or budget-constrained projects. The right choice when compliance requirements, US-only staffing, or on-site workshop availability are non-negotiable procurement requirements.

• Best for: US-based enterprises in regulated industries where compliance documentation is a procurement requirement

• Specialization: HIPAA-compliant PWA architecture, WCAG 2.1 AA, US-based healthcare and fintech delivery

• Pricing: $100-$149/hr

• Clutch rating: 4.9/5

6. Cleveroad

Cleveroad is a Ukrainian development firm with around 300 engineers and a client list concentrated in logistics, e-commerce, and healthcare. Operating since 2011, their technical quality on web and mobile projects is consistently reflected in client reviews — multiple Clutch testimonials specifically mention PWA delivery, service worker implementation, and push notification reliability. For mid-market companies that need solid PWA delivery at a competitive rate without the coordination overhead of a large firm, they are one of the most efficient options on this list.

Their PWA work covers the standard feature set — service workers, offline caching, push notifications, installability — and they have shipped successfully in three verticals where PWA architecture is particularly valuable. In logistics, field workers using their PWAs can confirm deliveries, capture signatures, and update shipment status without network access, with the data syncing when connectivity returns. In e-commerce, their offline product catalog and cart persistence implementations follow proven patterns that reduce bounce rates from poor-connectivity users. In healthcare, patient-facing scheduling and information tools use push notifications for appointment reminders with reliable delivery across Android and desktop.

Where Cleveroad has less depth is in complex offline-first data architectures where conflict resolution logic is sophisticated — multiple users editing shared records, operational transforms, or fine-grained field-level merge strategies. For standard PWA patterns their delivery is consistent; for the hardest offline architecture problems, a specialist with deeper PWA-specific experience will produce better outcomes.

Notable work: Logistics field-worker PWA with offline delivery confirmation, signature capture, and background sync, e-commerce retail PWA with offline catalog and push notification re-engagement campaigns, and healthcare scheduling PWA with appointment reminder push notifications and offline form submissions.

Pricing signal: $25-$49/hr. PWA engagements typically run $25,000-$100,000. Fixed-price engagements available for well-scoped projects with clear offline requirements.

What to watch: Solid on standard PWA patterns; less suited for complex offline-first architectures with sophisticated conflict resolution logic or fine-grained field-level merge requirements.

• Best for: Mid-market companies that need reliable PWA delivery at competitive rates in logistics, e-commerce, or healthcare

• Specialization: React and Angular PWA, logistics and e-commerce verticals

• Pricing: $25-$49/hr

• Clutch rating: 4.9/5

7. Intellias

Intellias is a large-scale product engineering company headquartered in Lviv, Ukraine, with offices across Europe and the US. With over 3,000 engineers, they operate at the scale required for enterprise digital transformation programs — the kind of engagements where a PWA is one component of a broader platform modernization rather than a standalone build. Their delivery governance structure, multi-workstream coordination, and enterprise integration experience are built for programs that run 24+ months, not for focused PWA builds with a defined end date.

Their PWA work appears most commonly inside larger digital transformation programs: migrating legacy desktop web applications to PWA architecture, building internal enterprise tools that need offline capability for remote or traveling employees, and creating customer-facing experiences that need to work across wildly inconsistent device and connectivity environments in international markets. For organizations where the PWA is one module of a platform rather than the entire product, their program management capability is directly relevant.

Intellias is not the right choice for companies that need a focused PWA built in 12-16 weeks. Their onboarding and governance processes are designed for large engagements, and smaller projects can feel over-engineered and slow relative to what a leaner shop would deliver. The right buyer for Intellias is an enterprise running a multi-year digital transformation program that has the budget, timeline, and internal governance to match Intellias' process.

Notable work: Enterprise employee portal PWA with offline access to HR data and forms for global teams, automotive retail digital showroom PWA with offline vehicle configuration and push notification lead follow-up sequences, and insurance customer portal PWA with offline claims status tracking and document upload queuing.

Pricing signal: $50-$99/hr. Enterprise engagements typically run $100,000-$500,000+. Best suited for long-duration platform programs with defined governance structures.

What to watch: Large-company process overhead makes Intellias unsuitable for small, fast-moving, or standalone PWA projects. Best when the PWA is one workstream within a multi-year enterprise program.

• Best for: Large enterprises embedding PWA development within a multi-year digital transformation program

• Specialization: Enterprise platform modernization, multi-workstream PWA delivery

• Pricing: $50-$99/hr

• Clutch rating: 4.8/5

8. Toptal

Toptal's vetting surfaces web engineers with PWA-specific experience: service worker architecture using Workbox and custom implementations, Web Push API integration for cross-platform notification delivery, IndexedDB and Cache API design for offline data storage, and evaluation of Lighthouse Core Web Vitals with production debugging skills. For technical teams that have existing development capacity but lack a PWA specialist, a senior Toptal engineer can own the architecture decisions and mentor internal developers through the implementation without the overhead of a managed delivery engagement.

Toptal is a talent marketplace, not a delivery partner. A Toptal PWA engineer will make strong architecture decisions and write excellent code, but they will not run a discovery process, manage project scope, coordinate QA across device types, or communicate with business stakeholders unless you build that support structure around them. The distinction matters: if you need an end-to-end vendor, every other company on this list is a better fit. If you have a technical team that can own the delivery process and needs to fill a specific gap in PWA knowledge — offline data architecture, service worker performance optimization, push notification infrastructure — Toptal is the most direct way to access senior PWA engineering talent.

Their rates are at the high end of this list at $100-$200/hr for senior engineers, but because there is no project overhead, account management markup, or delivery governance cost built into the model, the total engagement cost for a 6-12 week augmentation is often competitive with managed delivery firms that charge lower day rates but add overhead.

Notable work: PWA architecture audits and Lighthouse performance remediation for existing web applications, service worker refactoring for cache reliability and background sync, offline data sync architecture for React-based SaaS products, and push notification infrastructure implementation across iOS, Android, and desktop.

Pricing signal: $100-$200/hr for senior PWA engineers. No minimum project size. Best for 4-16 week augmentation engagements where the PWA architecture gap is specific and well-defined.

What to watch: No managed delivery, no QA process, no project management. Toptal provides talent — the rest of the delivery infrastructure is your responsibility.

• Best for: Technical teams that need a senior PWA engineer to own architecture alongside existing development capacity

• Specialization: Senior PWA engineering, service worker architecture, Workbox, Web Push API

• Pricing: $100-$200/hr

• Clutch rating: N/A (talent marketplace, not a project delivery firm)

Side-by-side comparison

The question that separates the right PWA company from the wrong one

Most PWA development proposals will mention service workers, offline support, and Lighthouse scores. Almost none will tell you what happens when a user spends three hours editing a form in your field operations tool while driving through a dead zone — and then reconnects to find that a colleague updated the same record from the office.

That is the question that matters.

Part 1: Does the service worker strategy match the application's actual data patterns?

A cache-first strategy that makes sense for a marketing site is wrong for a logistics tool where every piece of data is time-sensitive. A network-first strategy with a cache fallback that works for a SaaS dashboard is wrong for a field-worker tool where the user cannot wait for a 30-second timeout before the cached version loads. The right cache strategy depends on how frequently data changes, how long stale data is acceptable, which operations must succeed offline versus which can be deferred, and how conflicts between local and remote state are resolved when sync occurs. A company that can describe your application's offline data model in their proposal has thought through the actual problem. A company that says "we will use Workbox" has named a tool, not described a solution.

Part 2: Is there an explicit iOS Safari plan?

iOS Safari imposes PWA restrictions that Android Chrome does not. Service worker storage is capped and can be cleared by the operating system under low-storage conditions without warning. Push notifications require iOS 16.4 or later, a home-screen installation, and an explicit user opt-in through a prompt that the developer must trigger — there is no native browser-level installation banner on iOS. A PWA that assumes Android Chrome behavior and tests only in Chrome DevTools will ship with broken behavior on roughly half of all mobile users. Ask any company you are evaluating what their iOS-specific testing protocol is, how they handle the push notification gap for users below iOS 16.4, and what their experience is with the WebKit service worker implementation's specific quirks. A vague answer means they have not shipped a cross-platform PWA in production.

Part 3: Can they produce production Lighthouse scores?

A Lighthouse score from a pre-launch sandbox is not evidence of production quality — it tells you what the app can score when the server is fast, cache states are fresh, and no real users are competing for resources. Production Lighthouse scores captured under real traffic, measured through PageSpeed Insights against a live URL, are where the gap between demo and delivered quality shows. Ask specifically for a PageSpeed Insights link from a live app the company has shipped, and ask when the app launched, what the score was at launch, and what it is today. A company that can answer these questions specifically has shipped a production PWA. A company that offers a screenshot from a development environment has not.

The PWA company you want is the one that has already solved the problems your team does not know exist yet.

"Progressive web apps are not a technology checkbox — they are an architecture commitment. The shops that ship real PWAs design the service worker strategy around the application's data model before a single component is written. The shops that ship technically compliant but practically unremarkable PWAs add the service worker as a post-launch afterthought and wonder why their Lighthouse scores do not hold in production."

— Ashit Vora, Founder, RaftLabs

According to Google's Web.dev research and third-party e-commerce studies, well-optimized PWAs reduce page load times by 60-70% compared to their pre-PWA equivalents, and retailers that adopted offline-first PWA architecture have reported bounce rate reductions of 20-30% alongside measurable conversion improvements. These results hold only when the service worker architecture is tuned to the application's real data access patterns. Adding a manifest file to an existing responsive site and calling it a PWA produces none of these outcomes.

Five questions to ask before signing

1. Can you share a Lighthouse report from a production PWA you shipped in the last 12 months?

The specific request here is a production score, not a sandbox score. Ask for the PageSpeed Insights URL — a live URL you can test yourself — not a screenshot from a development environment. A sandbox Lighthouse score is taken under controlled conditions with a fast server and no concurrent users; it routinely runs 10-20 points higher than the same app under production traffic with a real CDN cache state. Ask when the app launched and what the score was at launch versus today. If the score has degraded over time, ask why. If the company cannot provide a production URL at all, they have not shipped a production PWA.

2. How do you handle iOS Safari's specific PWA limitations?

iOS Safari has three major limitations that Android Chrome does not: service worker storage quotas that the operating system can clear under low storage conditions, push notifications that require iOS 16.4 or later and a home-screen installation and an explicit developer-triggered opt-in prompt, and the complete absence of a native browser installation banner. A company that has shipped cross-platform PWAs will answer this with specifics: which iOS versions they tested against, how they handle push notifications for sub-16.4 users (typically email fallback or an in-app persistent prompt), and what their protocol is for testing the WebKit service worker implementation separately from V8. A response of "we support all major browsers" means they have not built a cross-platform PWA.

3. What is your offline data conflict resolution strategy?

This is the hardest architectural question in PWA development and the one that most cleanly separates experienced vendors from those who have built demos rather than production applications. If a user edits a record offline and the same record is updated by another user while they are disconnected, what happens when the first user reconnects? Last-write-wins discards one user's changes silently. Field-level merge requires knowing which fields matter and in what order. Operational transforms are used in collaborative editors. A user-facing conflict resolution UI transfers the problem to the user. Each approach has tradeoffs, and the right answer depends on the application. But any experienced vendor should have a clear position and the ability to explain the tradeoffs. If they have not thought about this scenario, they have not designed a real offline data layer.

4. How do you test push notification delivery across platforms?

Push notification delivery is not uniform across operating systems and browsers. Android Chrome uses Google's Firebase Cloud Messaging infrastructure. iOS requires routing through Apple Push Notification service via Safari's Web Push implementation, which is only available on iOS 16.4 and later and only from installed PWAs. Desktop Chrome and Firefox each use different push service implementations with different delivery guarantees. A company that tests push notifications only in Chrome on a development machine has not tested the majority of real delivery paths. Ask which testing environments they use, whether they have real device testing for iOS push delivery, how they handle notification delivery failures and retry logic, and what their delivery rate reporting looks like across platforms in production.

5. What does a service worker update deployment cycle look like for your team?

Service workers cache both application assets and API response data. When a new version of the application is deployed, users whose browsers have an active service worker may not receive the update immediately — the browser's service worker lifecycle requires the previous worker to complete all active sessions before the new worker activates. An update deployment process that does not handle this correctly results in users running stale application versions for days or even weeks after a release, which creates support complexity and can surface bugs that were fixed in the new version. Ask how the company handles this: do they use versioned cache keys and explicit cache eviction on activation? Do they implement a "new version available — tap to reload" notification for users? What is their documented process for measuring time-to-adoption after a deployment? A company that can describe this with specifics has shipped a production PWA into a real user base.

The verdict

The right PWA development company depends on what the PWA is for, what your offline use cases are, and how much of the delivery process you want to manage internally.

Use Simform when you need a single large-team vendor to own the full stack — backend, database, PWA frontend, and ongoing maintenance — for an enterprise-scale engagement where parallel workstreams are required.

Use RaftLabs when you need a production PWA with offline-first architecture, documented Lighthouse 95+ scores, and a fixed-price engagement in the $30,000-$120,000 range delivered in 10-20 weeks. Their track record with enterprise clients and their default offline-first design stance make them the most direct fit for mid-market and enterprise businesses with real offline use cases who want a vendor, not a talent marketplace.

Use Netguru when you are a European company or a US product company that wants a design-led partner to own the product experience — UX research, design system, and engineering — rather than just the engineering delivery.

Use Cheesecake Labs when the PWA needs to feel like a native mobile app: bottom navigation, gesture interactions, and an experience that users cannot distinguish from something downloaded from an app store.

Use Arcweb Technologies when you are in healthcare, energy, or financial services, your procurement requires a US-based team, and compliance documentation is a delivery requirement rather than a preference.

Use Cleveroad when you need reliable mid-market PWA delivery at the most competitive rate on this list, with proven work in logistics, e-commerce, and healthcare verticals.

Use Intellias when the PWA is one component of a multi-year enterprise digital transformation program that requires large team capacity, enterprise integration depth, and a delivery governance structure that matches your organization's procurement requirements.

Use Toptal when your team has existing development capacity and needs a senior PWA specialist to own the service worker architecture and offline data layer for 4-16 weeks, without the overhead of a managed delivery engagement.

For mid-market businesses with genuine offline use cases and a need for production-proven, fixed-price delivery, RaftLabs and Cleveroad offer the clearest value. For consumer-facing products where interaction quality is the competitive differentiator, Cheesecake Labs and Netguru are the stronger choices.

RaftLabs ships production PWAs with offline-first architecture and Lighthouse 95+ scores. 4.9/5 on Clutch. Talk to a founder about your project.