An app development company that ships to both stores
We design, build and launch iOS and Android apps with React Native and Flutter — one codebase, native performance, and a clean path through the App Store and Play Console. From MVP to scale, we own the whole release.
What we do
Native-quality apps without building everything twice
You don’t need two teams and two codebases to ship a great mobile app. We build with React Native and Flutter so iOS and Android share one codebase, then hand-tune the platform-specific parts — gestures, navigation, push, deep links — until it feels genuinely native. We handle signing, store metadata, review responses and post-launch monitoring, so launch day is a non-event.
What we build
Everything you need, under one team
Cross-platform apps
One React Native or Flutter codebase that ships to iOS and Android with native look and feel.
Native iOS & Android
Swift and Kotlin builds when you need maximum performance or deep platform integration.
MVP apps
A focused first version in 4–8 weeks to validate the idea before you invest in scale.
Backend & APIs
Node.js APIs, real-time sync, auth, and push notifications wired to your app.
App Store launch
Signing, certificates, store listings, screenshots, and App Review responses — handled end to end.
Maintenance & updates
Crash fixes, OS-version upgrades, and feature releases on a predictable cadence.
Why Krapton
Why teams pick us as their app development partner
Senior engineers, fixed scope, and code you own — the things agencies promise and rarely deliver.
One codebase, two stores
React Native and Flutter cut build and maintenance cost roughly in half versus separate native teams.
Tested on real devices
We verify on real iOS and Android hardware — not just simulators — before every release.
Store launch included
Provisioning, signing, metadata and review responses are part of the engagement, not an afterthought.
Senior engineers only
You work directly with the engineers building your app — no account managers in between.
How we work
A clear path from brief to launch
Discovery & scope
We pin down the must-have features for v1 and give you a fixed-price, fixed-scope plan.
Design & prototype
High-fidelity screens and a clickable prototype approved before development starts.
Build & test
Weekly builds you can install on your own phone via TestFlight and Play internal testing.
Launch & monitor
We push to both stores, respond to App Review, and wire up crash + analytics monitoring.
Tooling we use
Industry-standard stack, no proprietary lock-in
FAQ
Questions, answered
How much does it cost to build an app?
A cross-platform MVP typically starts around $2,500 and a full-featured app from $8,000, depending on scope. We send a fixed-price plan after a short discovery call.
Should I build native or cross-platform?
For most products, React Native or Flutter gives you near-native performance at roughly half the cost. We recommend fully native (Swift/Kotlin) only when you need heavy graphics, AR, or deep OS integration — and we’ll tell you honestly which fits.
Do you handle App Store and Play Store submission?
Yes — signing, certificates, store listings, screenshots, privacy details and App Review responses are all part of the engagement.
How long does it take to build an app?
An MVP usually ships in 4–8 weeks; a larger app takes 8–16 weeks. You get an installable build every week.
Do you maintain the app after launch?
Yes. We offer ongoing maintenance for crash fixes, OS upgrades and new features on a predictable monthly cadence.
Ready to build? Tell us what you have in mind.
Send a short brief and a senior engineer will reply within one business day with next steps — no sales fluff.