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Cross-platform development of mobile apps for iOS and Android with a single codebase

We create fast and visually flawless mobile applications simultaneously for iPhone and Android based on React Native or Flutter. We shorten development timelines by 1.8 times, reduce launch costs to 40% and guarantee native interface performance.

✓ Unique code base: up to 85% shared code for fast release in App Store and Google Play
✓ Budget savings of up to 40% on development and up to 50% on further technical support
✓ Native productivity 60–120 FPS thanks to compilation into machine code (AOT / Hermes Engine)
✓ Simultaneous release of new features for iPhone and Android users on the same day
React Native 0.74+ Flutter 3.22+ TypeScript & Dart Single Codebase Fast Time-to-Market
Obtain a technical calculation
Formats and pricing
ALL IT • SERVICE SPEC
SLA 99.9%
[ MOBILE DEVELOPMENT ] WARRANTY UNDER AGREEMENT
One project — two global marketplaces

iOS App Store + Google Play • Synchronized Release • Shared Business Logic

⏱ Start: 1–3 days 🛡️ NDA: 100% SLA Warranty
⚡
Time-to-Market x2
Fast Release
💰
-40% Budget
1 team instead of two
🍏🤖
iOS + Android
100% market coverage
🔄
Code Share 85%
Unique Business Logic
✓ Official contract with fixed cost of work
✓ 100% transfer of rights to code and configuration to the customer
✓ Assigned leading engineer and support 90 days
FULL TRANSFER OF RIGHTS CONTRACT + WARRANTY
[ ECONOMICS AND BUSINESS EFFICIENCY ]

Why cross-platform development is the most cost-effective choice for the majority of companies

Receive all benefits of the mobile sales channel without double costs for separate teams

[ 01 ]

Market entry in 2 times faster

Shared architecture, one development team and parallel building of binaries allow to launch MVP within 6–8 weeks right on both platforms.

[ 02 ]

Savings up to 40% general budget

You don't need to hire, coordinate, and pay for two separate iOS and Android developer teams. One stack covers all tasks.

[ 03 ]

Identical user experience and logic

No discrepancies in functionality between iPhone and Android users: discounts, lead funnel and rules work the same way.

[ 04 ]

Cheaper continued support and updates

Any new feature or fix is implemented once in the shared code base and instantly delivered to both platforms.

[ Stages of Cross-Platform Development ]

What is included in the development of a cross-platform application under license

Full engineering cycle from component system design to publication on both sides

[ STEP 01 ] Architecture

Choice of framework (React Native vs Flutter) and architecture

We analyze the product type, animation speed, and third-party modules to choose the best tool for your business case.

[ STEP 02 ] Design

Cross-platform adaptive UI/UX design

We create a single design system in Figma taking into account the specifics of iOS navigation (Human Interface) and Android (Material Design).

[ STEP 03 ] Development

Development on React Native (TS) or Flutter (Dart)

We create a modular code base, state management (Redux Toolkit / Zustand / BLoC) and high-speed native bridges (JSI / FFI).

[ STEP 04 ] Integrations

Connection of Apple Pay and Google Pay payments

We integrate native payment SDKs, push notifications (OneSignal / Firebase) and device camera/geolocation functionality.

[ STEP 05 ] QA Testing

Testing on iPhone and Android smartphones

Parallel QA on a park of physical smartphones of different generations: checking 60 FPS performance, checkout testing and network failures.

[ STEP 06 ] Double Release

Simultaneous release in App Store and Google Play

We are preparing the graphics, going through the moderation of both digital platforms, and organizing a synchronized product launch.

[ RATE PACKS ]

Select the format for creating the application for two platforms

Transparent Tariffs, Staged Payment by Sprint, and Official Guarantees According to the Contract

Fast launch on two markets at the same time

Dual MVP (iOS + Android)

Basic functional mobile app on React Native or Flutter for quick testing of business model on both platforms.

Development time: from 5–7 weeks
Work Scope:
✓ Development on React Native or Flutter (up to 12 screens)
✓ Single code base for iOS and Android
✓ Authentication via Email, SMS, and Google/Apple Sign-In
✓ Connecting your backend through REST API
✓ Basic Push notifications (Firebase FCM / APNs)
✓ Publication in App Store and Google Play
Choose the 'Dual MVP' tariff
Best choice for commercial projects ★ Popular

Production Cross-Platform

Full-featured cross-platform product with seamless Apple Pay / Google Pay payments, caching and smooth animation.

Development time: from 8–12 weeks
Work Scope:
✓ Everything that is included in the 'Dual MVP' package
✓ Integration of Apple Pay and Google Pay turnkey
✓ Offline mode and local data caching (WatermelonDB / Hive)
✓ Custom smooth animations (Reanimated / Flutter Animations)
✓ Analytics of orders and event tracking (Mixpanel / GA4)
✓ 90 days of full warranty support
Choose «Production Cross-Platform»
For large ecosystems and marketplaces

Enterprise Cross-Platform Suite

Scalable cross-platform complex: custom native modules in C++/Rust, OTA updates without waiting for moderation and SLA 24/7.

Development time: from 14–18 weeks
Work Scope:
✓ Everything that is included in the 'Production Cross-Platform' package
✓ CodePush / Shorebird: instant updates without moderation in the app store
✓ Custom native bridges (JSI / Native Modules on Swift/Kotlin)
✓ Automated CI/CD pipeline (Fastlane + GitHub Actions)
✓ Enhanced encryption of sensitive user data
✓ Dedicated team of engineers and SLA support 24/7
Select 'Enterprise Suite'
← Swipe options →
[ ONLINE CALCULATOR ]

Calculate budget for cross-platform app

Select technical parameters and compare savings compared to two native applications

1. Type of Mobile Application: Select Variant

2. Desired technology stack: Select Variant

3. Additional required features: Select Variant

CHOOSEN PARAMETERS OF THE SOLUTION:
⏱ Estimated Timeline: Calculation... 👥 Team: 2–3 engineers
1. Type of Mobile Application: E-Commerce / Marketplaces of goods
2. Desired technology stack: React Native (TypeScript)
3. Additional required features: Standard functions (Authentication, Push, API)
✓ Parameters will be fixed in the application form
Get an exact quote
[ STAGES OF COOPERATION ]

How the project is delivered

Transparent process from first contact to final release on your domain.

01
1–2 weeks

Analytics and selection of architecture

We define key user scenarios, design the architecture of a single codebase and API protocols.

02
2–3 weeks

Unified UI/UX design in Figma

We create a design system that looks native on iOS (compliant with HIG) and on Android

03
5–9 Weeks

Cross-platform development in two-week sprints

Write clean code, regularly providing test builds in TestFlight for iOS and APK for Android

04
1–2 weeks

Parallel QA testing on both platforms

We are testing animation smoothness, absence of crashes, correctness of payment and biometric operation on Apple and Android smartphones.

05
1 Week

Synchronized release on App Store and Google Play

We simultaneously perform censorship checks on both marketplaces and launch a public release of the app

Our Clients

Companies that have entrusted ALL IT Agency with the development and scaling of their digital solutions

Partner Case 6
Partner Case 5
Partner Enterprise
Meregi Group
Partner Case 11
Wizeclub
TOV Zagin Alpha
Valikhnovski Surgery Institute
DIM Service
Partner Case 6
Partner Case 5
Partner Enterprise
Meregi Group
Partner Case 11
Wizeclub
TOV Zagin Alpha
Valikhnovski Surgery Institute
DIM Service
[ FREQUENT QUESTIONS ]

Answers to common questions from customers

Key details regarding terms, independent website editing, and rights transfer.

In modern versions of React Native (with Hermes engine and New Architecture) and Flutter (with Impeller graphics engine) the difference in performance for 95% business applications is imperceptible to the eye. Interfaces operate at a frequency of 60–120 FPS without any delays.

If you need maximum flexibility for custom 2D graphics, widgets, and pixel-per-pixel consistency on any phone — we recommend Flutter. If your company already has a backend or web team using React/TypeScript, or you need the ability to update code without moderation (CodePush) — it's better to choose React Native.

No. Apple does not prohibit the use of React Native or Flutter. Moderators evaluate the quality of the interface, absence of crashes, payment functionality and compliance with privacy policies. We guarantee 100% moderation approval in the contract.

This is a technology (for example, Microsoft CodePush or Shorebird), which allows updating texts, logic or application interface on users' phones instantly bypassing the multi-day moderation of App Store and Google Play.

100% source code, architectural diagrams, graphic mockups and CI/CD repository configurations belong exclusively to your company.

Share this service with partners or colleagues

Fast delivery to the working chat or copying the link for budget approval

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Would you like to create an app immediately for iOS and Android?

Describe your project. Our system architect will help choose between React Native and Flutter and provide a detailed development cost estimate.

Confidentiality

Official NDA contract for system audit

Quick Feedback

We will contact you within 15 minutes during business hours.

Order cross-platform development

The tech lead will contact you within 15 minutes during working hours