Mobile app development
Mobile app development — Flutter apps for iOS & Android.
Appsarmy is a mobile app development company. We build cross-platform apps with Flutter — one codebase, native performance on iOS and Android — that pass strict store review and stricter enterprise audits. Mobile is our flagship craft, and part of our full software and AI services.
One team for iOS, Android, and everything cross-platform.
Most of our clients don't need two separate native apps and two separate teams. They need one cross-platform app development effort that ships to both stores. That's what Flutter is for — and it's what we're known for.
Flutter app development
Our flagship. A single Flutter codebase compiles to native iOS and Android with a consistent UI and real performance — roughly half the build and maintenance cost of two native apps, without the compromises of older hybrid frameworks.
Flutter is the core of what we doiOS & Android development
Whether you need cross-platform from one codebase or native iOS app development in Swift and Android app development in Kotlin for platform-specific features, we deliver apps that pass Apple's and Google's stricter reviews and behave correctly on real devices.
Native where it mattersReact Native development
A first-class alternative to Flutter — the right call when you have a React web team or a JavaScript codebase to share logic with. Native iOS and Android from one React Native codebase, built by engineers who ship it, not dabble in it.
Cross-platform & hybrid
One codebase, two platforms — in Flutter or React Native. Cross-platform done properly, so you ship faster and maintain less.
MVP development
A focused first version, built to test the idea in market fast — then scale what works.
App modernization
Rebuild a slow, dated app on a modern Flutter stack — without losing what already works.
One codebase. Both platforms.
From startup MVPs to banking-grade apps.
Enterprise & banking apps
Secure authentication, transaction signing, and core-system integration — to the compliance bar of a real financial institution.
Fintech & payment apps
Wallets, payments, lending, and neobank apps built for KYC, encryption, and the reliability money demands.
SaaS & B2B apps
Dashboards, field tools, and internal apps that connect to your existing systems and scale with your team.
Consumer & wellness apps
Engaging, fast, retention-focused apps — from health and wellness products to on-demand services.
Startup MVPs
A focused first release to validate the idea in market quickly — then iterate on real usage.
App modernization
Migrate a legacy or slow app to a clean Flutter codebase, keeping the features your users rely on.
A build process that ships, on a schedule you can see.
Scope
A written SOW — features, exit criteria, and how change requests are handled.
UX & UI
Flows and screens designed for the platform, reviewed before a line of code.
Build
Flutter development in short cycles, with working builds you can hold each sprint.
QA
Testing on real iOS and Android devices — performance, edge cases, and store rules.
Launch
Store submission handled end to end, including review and release management.
Support
Maintenance, monitoring, and iteration on real usage after you go live.
The mobile stack we build on.
A Flutter team that has shipped, since 2015.
Flutter depth
Mobile is our flagship, not a side offering — custom platform channels, complex state, offline-first, and native code when the framework isn't enough.
Enterprise-grade
Apps that pass the app store's stricter reviews and enterprise IT's stricter audits — including banking-grade security.
Senior-led pods
Engineers with production scars lead the work. No backfilling senior roles with junior time.
Direct access
You talk to the people writing the code, in your time zone — English-first, with IP protection and NDAs.
Work with us the way that fits.
Dedicated team
A Flutter pod that works as an extension of your team, sprint after sprint.
Fixed-scope project
A defined app, a written scope, a clear price — ideal for MVPs and well-defined builds.
Hire Flutter developers
Augment your in-house team with senior developers, matched fast, with a replacement guarantee.
Mobile app development questions.
What mobile app development services do you offer?
Cross-platform Flutter apps for iOS and Android, plus native where needed — covering enterprise, fintech, SaaS, consumer apps, and MVPs.
Native or cross-platform?
Primarily Flutter (one codebase, native performance on both platforms), with native Swift or Kotlin where a feature requires it.
Flutter or React Native — which should I choose?
Flutter is our default and flagship: native performance with the tightest UI control, which is why it suits enterprise and banking apps. React Native is the better fit when you already have a React team or JavaScript codebase to share. Both ship genuinely native apps — we help you choose on your team and product, not a house preference. Full comparison: Flutter vs React Native for enterprise apps — part of our engineering blog.
Why Flutter?
One codebase compiling to native iOS and Android — roughly half the build and maintenance cost of two native apps, with a consistent UI.
Can I hire dedicated Flutter developers?
Yes — a dedicated team, a fixed-scope project, or staff augmentation, with direct access and time-zone overlap for US, UK, EU, and GCC clients.
How much does a mobile app cost?
It depends on scope. A focused MVP is smaller; an enterprise or fintech app is larger. We scope every project in writing before it starts.
Do you build enterprise and fintech apps?
Yes — it's our core strength, with secure auth, transaction signing, and core-system integration to a real institution's bar.
Let's build your mobile app.
business days