Cross-platform app development with Flutter and React Native

Q: Flutter or React Native — which is better?

Flutter is great for custom UI and fast MVPs; React Native fits teams that already know JavaScript. We recommend one after a short call.

Q: Will it feel like a native app?

Yes — for most products users can’t tell the difference. We add native modules where platform features matter.

Q: How much can I save?

Typically 30–40% compared with two separate native apps, plus lower maintenance costs.

Q: Do you publish to both stores?

Yes — we handle App Store and Google Play releases, reviews and updates.

Q: Can you convert my native apps?

Yes, we migrate step by step so your users never notice.

Q: What is cross-platform app development?

Cross-platform app development means building one app for both iOS and Android from a single codebase, usually with Flutter or React Native. You maintain one product instead of two native apps.

Q: Why choose Perpetio for Flutter and React Native development?

Perpetio has shipped cross-platform apps to both stores for startups and enterprises. We add native Swift and Kotlin modules where needed, so your app feels native on iOS and Android.

One codebase. iOS and Android.

We build Flutter and React Native apps that look and feel native — so you launch on both stores faster and maintain one product instead of two.

Book a free consultation Flutter or React Native?

Clutch rating: 4.8 / 5
apps shipped: 200+
users reached: 10M+
reply to every request: < 24h

YourApp · one codebaseiOS + Android

FLUTTER · ONE CODEBASE

1class OrderScreen extends StatelessWidget {
2  @override
3  Widget build(context) => Column(children: [
4    OrderStatus(order.status),
5    LiveMap(courier: order.courier),
6    FilledButton(onPressed: track, child: Text('Track live')),
7  ]);
8}

iOSApp Store

AndroidGoogle Play

One codebase, both stores~90% shared code

Write once, ship to iOS and Android

Cross-platform frameworks we master

Flutter
Dart
React Native
TypeScript
Firebase
GitHub Actions

What we build

Cross-platform apps without compromises.

Native features where they matter, shared code everywhere else.

Flutter apps
Pixel-perfect iOS and Android apps from one Dart codebase.
- Flutter
- Dart
React Native apps
Native iOS and Android apps from one TypeScript codebase.
- React Native
- TypeScript
Tablets & wearables
Adaptive layouts for iPad, Android tablets and watches.
- iPad
- Wear OS
Native modules
Swift and Kotlin bridges for Bluetooth, payments, AR and more.
- Swift
- Kotlin
MVPs for startups
Launch on both stores fast and validate with real users.
- MVP
- PoC
- Pilot in 5 weeks
Explore the service →
Migration to cross-platform
Merge two native apps into one codebase, step by step.
- Migration
CI/CD for both stores
Automated builds and releases to both stores.
- GitHub Actions
- Azure DevOps
- Fastlane
AI features
Chat, vision and personalization on both platforms.
- OpenAI
- GPT
- Gemini
- On-device ML
Explore the service →
Performance tuning
Profiling and optimization for 60 fps everywhere.
- 60 fps
- Pixel-perfect

Where it runs

One app, both platforms.

Shared code, native feel.

iPhone
Live on the App Store.
- iOS
Android phones
Live on Google Play.
- Android
Tablets
Adaptive layouts.
- iPad
- Android tablets
Devices
BLE and IoT companions.
- BLE

Choosing a framework

Flutter, React Native or native?

All three are great — for different products.

Most popular
Pixel-perfect
Flutter
UI consistency
Speed to market
Cost for iOS + Android
BEST FORCustom UI, startups, MVPs
JS teams
React Native
UI consistency
Speed to market
Cost for iOS + Android
BEST FORTeams that know JavaScript
Max performance
Two native apps
UI consistency
Speed to market
Cost for iOS + Android
BEST FORHeavy platform features

Not sure?

We’ll recommend a framework in a free call.

Help me choose

How it works

Shared where possible, native where needed.

The architecture behind a great cross-platform app.

01 · SHARED UI
One interface
Widgets adapt to each platform.
- Shared design system
- Adaptive layouts
- Accessibility
02 · SHARED LOGIC
One codebase
Business logic written once.
- Dart / TypeScript
- Offline data
- State management
03 · NATIVE
Native bridges
Platform features via Swift and Kotlin.
- Bluetooth & sensors
- Payments
- Camera & AR
04 · RELEASE
Both stores
One pipeline, two stores.
- CI/CD
- App Store + Play
- Monitoring

Cross-platform without regrets

We’ll tell you honestly if native is a better fit.

Native look on each platform
60 fps animations
Native modules when needed
Same-day releases
One team to manage
You own the code

Case studies

Cross-platform apps we have shipped.

All case studies

Green energy · iOS & Android
Enact
A solar app with live power flow, savings and installer tools.
Read the case →
Real estate · iOS & Android
Resideo
A rental app with listings, room views and booking.

Tech stack

Our cross-platform toolkit.

Frameworks, backends and release tools we use every day.

Frameworks

Flutter
Dart
React Native
TypeScript
JavaScript

Native

Swift
Kotlin
Xcode
Android Studio

Backend & release

Firebase
Node.js
AWS
GitHub Actions
Fastlane

How we work

Both stores, one plan.

A test build for iOS and Android every two weeks.

011–2 weeks
Discovery
Scope and framework.
022–4 weeks
Design
Shared design system.
036–10 weeks
Build
Sprints for both platforms.
041–2 weeks
Beta
TestFlight + Play testing.
051 week
Launch
Both stores.
06ongoing
Grow
Updates to both at once.

Discovery
from 2 weeks
Framework choice and estimate.
- Tech advice
- Prototype
- Estimate
Most popular
Cross-platform MVP
from 8 weeks
Launch on both stores.
- Design + build
- Beta
- Release
App team
monthly
Ongoing development.
- Flutter/RN devs + QA
- Roadmap
- Releases
Migration
from 4 weeks
From two native apps to one.
- Audit
- Step-by-step plan
- No downtime

FAQ

Questions about cross-platform apps.

Didn't find yours? Ask us directly — we reply within 24 hours.

Flutter or React Native — which is better?

Flutter is great for custom UI and fast MVPs; React Native fits teams that already know JavaScript. We recommend one after a short call.

Will it feel like a native app?

Yes — for most products users can’t tell the difference. We add native modules where platform features matter.

How much can I save?

Typically 30–40% compared with two separate native apps, plus lower maintenance costs.

Do you publish to both stores?

Yes — we handle App Store and Google Play releases, reviews and updates.

Can you convert my native apps?

Yes, we migrate step by step so your users never notice.

What is cross-platform app development?

Cross-platform app development means building one app for both iOS and Android from a single codebase, usually with Flutter or React Native. You maintain one product instead of two native apps.

Why choose Perpetio for Flutter and React Native development?

Perpetio has shipped cross-platform apps to both stores for startups and enterprises. We add native Swift and Kotlin modules where needed, so your app feels native on iOS and Android.

Let’s build your cross-platform app.

Tell us what you're working on. You'll get a clear plan, not a sales pitch.

< 24h

Response time

Free

First consultation

NDA

On request

Lara Kushnei

Business Growth Executive

Cross-platform app development with Flutter and React Native

Cross-platform apps without compromises.

Flutter apps

React Native apps

Tablets & wearables

Native modules

MVPs for startups

Migration to cross-platform

CI/CD for both stores

AI features

Performance tuning

One app, both platforms.

iPhone

Android phones

Tablets

Devices

Flutter, React Native or native?

Flutter

React Native

Two native apps

Not sure?

Shared where possible, native where needed.

One interface

One codebase

Native bridges

Both stores

Cross-platform without regrets

Cross-platform apps we have shipped.

Enact

Resideo

Our cross-platform toolkit.

Frameworks

Native

Backend & release

Both stores, one plan.

Discovery

Design

Build

Beta

Launch

Grow