What if the scope grows mid-build?

We flag it the sprint it happens, with the specific feature and the added time or cost attached, so you decide before it's built rather than finding it on the final invoice.

What if we're not happy with a sprint build?

Every sprint ends with a review build in your hands. If a screen or flow isn't right, it gets addressed in the next sprint before we move forward, not patched at the end.

Do you support over-the-air updates like CodePush?

Flutter has no built-in equivalent, so we use Shorebird where the update qualifies (Dart-code changes, not asset or native-code changes). We'll tell you upfront on the call which of your likely post-launch fixes would actually qualify.

What exactly transfers to us on handover?

The full repository, the CI/CD pipeline configuration, and App Store and Play Store developer account access if you want us to keep it under your existing accounts throughout (recommended, so nothing needs transferring later).

Can we hire your developer directly afterwards?

Yes. Nothing in our agreement blocks it. Most clients keep us on for ongoing releases instead, since the context of the build stays with the team that shipped it, but that's your call.

Flutter development that renders the same everywhere

Your app comes from a single Dart codebase, drawn pixel-for-pixel through Flutter's own rendering engine rather than assembled from native UI components. One team, one design system, one app that looks identical on iOS and Android by design.

The problem, reframed

Most cross-platform arguments miss the actual tradeoff Flutter makes. It does not use native UI components at all. It paints every pixel itself through the Impeller rendering engine (with Skia still active as a fallback on some platform and version combinations), which is why a heavily animated, custom-brand interface holds its frame rate and looks identical on both platforms in a way that assembling native components rarely does.

The cost of that choice is the other direction: an app that leans on platform-native UI conventions (iOS-style navigation gestures, Android's back-button behavior) needs deliberate work to feel native, because Flutter will not give you that for free the way React Native's native components do.

We pick Flutter specifically when the UI is the differentiator: a design system with real motion, a brand that needs to look the same everywhere, or a data-dense interface (dashboards, charts, custom visualizations) where widget-level control beats native assembly.

What we build

Core app architecture

Dart on the Impeller rendering engine, with a widget tree structured for the app's actual complexity rather than every screen nested five nav layers deep
State management matched to the app's size: Riverpod or Bloc for larger apps with real business logic, Provider for smaller ones where the overhead of a heavier pattern is not worth it
Routing with go_router for declarative, deep-link-aware navigation instead of manual Navigator stack management

Offline and sync

Local-first storage with Drift (SQLite under Dart-typed queries) or Hive for apps that need to work without a connection
Conflict resolution for records edited offline and reconciled against the server on reconnect, not a silent overwrite

Native device integration

Platform channels for any device feature not already covered by a maintained pub.dev plugin, written per platform where Flutter's abstraction genuinely does not reach
Push notifications through firebase_messaging (FCM for Android, APNs relay for iOS), with foreground, background, and terminated-state handling covered explicitly, since Flutter does not handle all three identically out of the box
Biometric auth through local_auth (Face ID, Touch ID, BiometricPrompt)
Deep linking and universal links/app links so a WhatsApp message or email opens directly to the right screen

Release and operations

CI/CD with Codemagic or Fastlane, so App Store and Play Store submissions run as a pipeline step
Over-the-air update capability through Shorebird for JS-free, Dart-code patches that skip a full store review cycle for eligible fixes, since Flutter has no built-in equivalent to React Native's CodePush
Crash and performance monitoring wired in from day one (Sentry or Firebase Crashlytics), not added after the first production incident

Built on a connected stack

Where it makes sense, the app's backend runs through the same n8n automation layer used for web systems, so an in-app action, a WhatsApp Business API message, and a CRM update land in one workflow instead of three disconnected ones. Firebase shows up often in Flutter builds specifically, and where it does, we wire Firestore or Realtime Database into the same automation layer rather than treating it as a silo.

For apps that need in-app support, a RAG chatbot sits behind the same architecture documented on our AI customer support pages, exposed through a native chat screen. Where the app is one piece of a larger product, business logic and API types get structured to share cleanly with a Next.js web front end, even though Flutter itself is Dart, not TypeScript.

Core Values

Who this is for

Design-led products where the UI is the differentiator.

Heavy animation, custom components, or a data visualization layer that needs to render identically on both platforms.

Startups validating a mobile-first idea with a strong design system already in hand.

You have the Figma file. You need it built exactly, not approximated.

SaaS companies extending a Firebase-backed web product to native.

Your data layer already runs on Firebase, and a Flutter app pairs with it more directly than most alternatives.

Agencies needing white-label Flutter capacity.

Your client wants a Flutter build specifically and your team is native or React Native first.

This work fits businesses with a working product or a funded, scoped plan for one, evaluating a native mobile presence as the next real step.

Why Flowagenz

You get full ownership of the codebase and the App Store and Play Store developer accounts on completion. No dependency on us, and no proprietary tooling standing between you and your next release.

We're based in Salem, Tamil Nadu, which is why the engineering-hour rate looks different from a US or UK studio quoting the same Dart and platform-channel work. We run daily async standups and keep meeting slots inside US, UK, and Australia business hours, so a blocked build gets a same-day answer instead of a 12-hour wait.

Process

How it works

Scoping call.

We map the UI complexity, native integrations, and any existing Firebase or backend dependencies that actually drive cost, rather than quoting off a feature list alone.

Architecture and design handoff.

Widget structure, state management pattern, and the platform-channel list get locked before screen-level code starts.

Build in two-week sprints.

You get a testable build (TestFlight and internal Play Store track, or a Codemagic build link) at the end of every sprint, not a single reveal at the end.

Store submission.

We handle App Store review requirements and Play Store target API level compliance directly.

Handover.

Repository, CI/CD pipeline, and store accounts transfer to you, with documentation for anyone who picks up the codebase next.

A standard MVP-scope app with a handful of core screens and one or two native integrations typically runs 5 to 9 weeks from scoping call to store submission. A design-heavy app with custom animation or a data visualization layer runs longer; we scope that on the call rather than guess at it here.

FAQ

Frequently Asked Questions

Everything you need to know about our process and digital systems.

Depends on what the app needs to do. If the UI has heavy custom animation or needs to look identical on both platforms down to the pixel, Flutter is usually the better call. If the app should feel native to each OS with less custom-UI work, React Native usually wins. We make that call on the scoping call, not by default.

Ready to scope your app

Tell us the platforms, the core screens, and how much of the UI needs custom design work versus standard components. We'll come back with a real sprint breakdown and a cost range in INR and USD, not a generic estimate.

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