Flutter App Development Services
Flutter apps for one controlled interface across iOS and Android.
We build Flutter products when both mobile platforms need a shared workflow and a consistent custom-rendered interface. The first release proves the hardest plugin, native channel, performance, and platform-convention boundary before the codebase grows.
Bring the problem, the current workflow, or the existing code. We reply with a practical next step within one business day.
The brief
Start with what is not working.
Good software decisions begin with the constraint, not a list of features or a preferred technology.
Does the product need a controlled branded interface across both stores without maintaining two presentation layers?
Are critical plugins, native channels, background behavior, or web and desktop expectations still assumptions?
Plain answer
Flutter app development uses Dart and Flutter's rendering system to ship one product across iOS and Android with a controlled custom interface. RaftLabs proves critical plugins, native channels, performance, lifecycle, and platform conventions before scaling the shared codebase. A focused first release starts at $20,000 and usually takes 12 to 16 weeks.
One codebase still had two platform edges.
The interface matched. Then a payment plugin behaved differently after an OS update on a real device, while background work stopped on one platform during the same release. Flutter removes much duplicate product work, but every critical package, lifecycle behavior, native channel, and store-delivery path still needs separate proof.
Published Flutter proof
- in production on iOS and Android
- 2+ years
- Legal events app case study
- recorded QR checkout flow
- Under 15 sec
- Medical-spa loyalty case study
- from one Flutter codebase
- iOS + Android
- Medical-spa loyalty case study
The legal events app and medical-spa loyalty app document these Flutter results. They do not prove that Flutter fits every product or guarantees a delivery outcome. A new release needs its own plugin, performance, device, and store criteria.
Choose Flutter when controlled rendering and one shared mobile product outweigh automatic platform-native UI.
Start by proving the hardest plugin, native channel, lifecycle, or performance requirement.
The same core product and release cadence are required on iOS and Android.
A consistent custom interface matters more than inheriting each platform control automatically.
The team can own Dart, Flutter upgrades, packages, and any Swift or Kotlin channels.
The product is only for one platform or depends on the newest native interface immediately.
Critical hardware or background behavior cannot be proven through packages or channels.
Web SEO or desktop conventions are central and assumed to work without separate design.
Flutter vs React Native vs native
| Route | Best fit | Constraint to prove |
|---|---|---|
| Flutter | Shared product with controlled custom rendering | Packages, channels, lifecycle, conventions, and Dart ownership |
| React Native | Shared product aligned with React and TypeScript | Native modules, package health, and platform UI differences |
| Native | Platform-specific product or deep OS behavior | Separate delivery and maintenance streams are justified |
Scope
What belongs in a focused Flutter release
- 01
Shared product and widget system
Implement the core workflow, design tokens, widgets, navigation, state, errors, analytics, and accessibility for both platforms. - 02
Package and platform-channel proof
Review critical dependencies and write or test Swift and Kotlin channels where the framework layer is not enough. - 03
API and offline behavior
Integrate authenticated services, secure storage, queued work, conflicts, retries, and recovery without hiding uncertain state. - 04
Platform adaptations
Handle permissions, back behavior, gestures, purchases, notifications, lifecycle, and other OS-specific expectations explicitly. - 05
Both-store delivery
Prepare buyer-owned signing, metadata, privacy answers, testing tracks, staged rollout, monitoring, and handover for each store.
How it works
From Flutter fit to both-store release
- Phase 101
Define product and rendering constraints
Map workflows, interface system, devices, platform conventions, native capabilities, performance, team skills, and acceptance measures.
- Phase 202
Prove plugins and native boundaries
Test the hardest package, platform channel, lifecycle, rendering, offline, background, or existing-backend constraint.
- Phase 303
Build the shared Flutter product
Implement widgets, state, navigation, API and offline behavior, native adaptations, accessibility, telemetry, and tests.
- Phase 404
Release both stores and hand over
Complete platform QA and submissions, stage rollout, monitor each build, document native channels, and establish ownership.
Risk
What the Flutter specification must settle
- Critical packages
- Review maintenance, licensing, OS support, release cadence, and replacement options before a dependency becomes architecture.
- Native channels
- Name Swift and Kotlin code, tests, upgrade ownership, and the team that can maintain each bridge.
- Platform conventions
- Decide where a consistent branded interface should yield to iOS or Android behavior and accessibility expectations.
- Additional surfaces
- Treat web and desktop input, layout, accessibility, SEO, and release channels as product work, not free output.
Scope and price
A focused Flutter release starts at $20,000.
Begin with one core workflow, iOS and Android builds, standard backend integration, monitoring, and store submission.
Framework selection follows a proof of the hardest package or native boundary.
Starting investment
Starts at $20,000
A focused first release usually takes 12 to 16 weeks. Native channels, offline complexity, custom rendering, or more surfaces extend the plan.
Plugin risk made visible
Native work remains owned
Related mobile app services
- 01
Cross-Platform App Development
Compare Flutter, React Native, and native before choosing a framework.
- 02
React Native Development
Shared mobile products aligned with React and TypeScript teams.
- 03
Android App Development
Native Kotlin apps for hardware, background work, kiosk, and managed fleets.
- 04
iOS App Development
Native Swift apps for Apple frameworks, platform behavior, and review.
Work with us
Bring the Flutter assumption the product cannot afford to get wrong.
Share the workflow, interface, devices, plugins, native capabilities, existing team, backend, and target surfaces. We will prove the hardest boundary before scoping the shared build.
- Scope and cost agreed before work starts. No surprises. No obligation.
- Working prototype within 3 weeks of kickoff.
- Pay by milestone. You see progress before each invoice.
- 60-day post-launch warranty. Bug fixes, UI tweaks, and deployment support. No retainer.
- All conversations are NDA-protected.
Common questions
Flutter fits when the product values controlled custom rendering across platforms and the team is comfortable owning Dart and Flutter. React Native may fit better when existing React and TypeScript skills, native controls, or JavaScript ecosystem alignment matter more. Critical packages and interactions should be tested.
Choose native when the product is platform-specific, needs new OS capabilities immediately, relies heavily on platform-native interaction, or requires hardware and background behavior that cannot be supported cleanly. Flutter fits shared products whose native edges are bounded and maintainable.
Often yes through maintained packages or platform channels written in Swift and Kotlin. We prove the required capability on representative devices before committing. A package listing does not by itself prove lifecycle behavior, performance, maintenance, or compatibility with the supported OS range.
Flutter can target those surfaces, but shared code does not mean one interface fits every context. Input, navigation, accessibility, SEO, download size, integrations, and release channels differ. We scope web or desktop only when the product and ownership case justifies those adaptations.
A focused first release starts at $20,000 and usually takes 12 to 16 weeks. It covers one core workflow, iOS and Android builds, standard backend integration, monitoring, and store submission. Custom rendering, native channels, offline complexity, or additional web and desktop surfaces increase scope.