Native → Cross-Platform Mobile

Move native apps to cross-platform.

Native to cross-platform migration at Empyreal Infotech unifies iOS and Android into React Native or Flutter, reusing 50-70% code while reducing team size and shipping velocity.

One codebase for iOS and Android. Faster feature releases, smaller engineering teams, unified testing strategy.

Code reuse 50–70%. Timeline 16–24 weeks. Investment $220–360K. React Native or Flutter with native bridges where they matter.

Schedule App Audit Assess current apps
Shared coreNative bridgesReal-device QA16–24 weeks
Why Move

Why consolidate to cross-platform.

Unified codebase efficiency

Stop maintaining parallel Swift and Kotlin codebases. One team deploys to both platforms. Bugs fixed once, features released simultaneously.

Smaller engineering footprint

Eliminate iOS-specific and Android-specific specialists. Hire general mobile developers skilled in React Native or Flutter. 30-40% fewer engineers.

Faster iteration and feature velocity

No platform parity delays. One QA cycle covers both platforms. Deploy hot fixes immediately without app store review delays (for certain frameworks).

Constraints

Cross-platform constraints you need to understand.

Performance limitations

Cross-platform apps have 15-30% higher CPU/memory overhead. Animations, real-time features, and data-heavy operations need optimization or native modules.

Platform-specific features lag

New iOS/Android OS features take time to reach cross-platform SDKs. Cutting-edge camera, biometric, or background processing may require native bridges.

UX consistency vs native feel

Cross-platform UIs often feel "off" to native platform users. Navigation patterns, scrolling behavior, and gestures require careful tuning per platform.

Debugging complexity increases

Runtime crashes happen on iOS but not Android, or vice versa. Reproduction requires both simulators and real devices. Tooling fragmentation is real.

Migration Path

Your native-to-cross-platform migration path.

01

Platform Analysis & Framework Selection

Audit current iOS/Android apps for cross-platform feasibility. Evaluate React Native vs Flutter vs other frameworks based on feature needs. Prototype in chosen framework. Timeline: 2–3 weeks.

02

Core Architecture & Shared Code Layer

Design shared business logic layer, API client, data models. Build navigation architecture for cross-platform consistency. Create reusable UI component library. Timeline: 3–4 weeks.

03

Screen-by-Screen UI Migration

Incrementally rebuild screens in cross-platform framework. Match existing UX where possible. Add platform-specific tweaks (gestures, navigation). Test on real devices continuously. Timeline: 4–6 weeks.

04

Native Module & Deep Feature Integration

Build native bridges for platform-specific features (camera, biometrics, push notifications). Performance-optimize hot paths. Full platform feature parity verification. Timeline: 3–4 weeks.

05

QA, Testing & Parallel Deployment

Comprehensive testing on diverse device/OS combinations. Beta release to subset of users. Monitor crash rates, performance, feature coverage. Gradual rollout both platforms. Timeline: 4–6 weeks.

Risks

Risks we actively manage.

Feature parity incompleteness at launch

Some native features take longer to implement. We prioritize critical paths and plan staggered feature rollout.

User perception of "not native"

Scrolling, animations, and interaction feel slightly different. We invest in platform-specific UX polish and user feedback loops.

Platform-specific runtime bugs

Code behaves differently under iOS vs Android memory/threading models. We use device farms and comprehensive testing matrices.

Performance regressions on lower-end devices

Cross-platform overhead hurts older phones. We profile on target device specs and optimize memory/battery.

Team retraining and capability gaps

iOS/Android specialists need to learn cross-platform frameworks. We provide pairing, workshops, and gradual knowledge transfer.

Next Step

Ready to consolidate your mobile development.

Let's audit your current apps and plan the cross-platform transition.

Schedule App Audit Email Mohit directly
Questions

Frequently asked questions about Native to Cross-Platform Mobile migrations

Direct answers about how this engagement actually works. If your question is not here, ask Mohit directly.

Should we rewrite everything in React Native/Flutter at once, or migrate gradually?
Gradual replacement. Keep Swift/Kotlin native code for performance-critical paths (animations, camera, sensors). Share business logic via a shared Dart or TypeScript layer. React Native or Flutter wraps the UI. Over 4-6 weeks, more screens move to the cross-platform framework. Native code stays where it matters (gestures, hardware), cross-platform handles the rest.
What's the realistic timeline and cost to consolidate iOS and Android into one codebase?
16-24 weeks, $220-360K depending on app complexity. You retain 50-70% of logic (networking, state management, business rules). UI layer rebuilds from scratch. Native teams of 4 become 2-3 cross-platform engineers. Smaller apps: 10-14 weeks, $120-200K. Budget for 2-3 weeks debugging platform-specific bugs.
How do we keep feature parity between iOS and Android during the switch?
React Native and Flutter are write-once, deploy-twice. A single codebase compiles to both platforms. No more 2-week delays waiting for Android to catch up to iOS. Features ship simultaneously. However, testing on real devices (both iOS and Android) is mandatory; simulator testing misses platform-specific crashes.
What's the biggest technical risk in moving from native to cross-platform?
Performance regressions. Gesture recognition, animations, and scroll smoothness often feel less native in React Native because it marshals data between JS and native layers. Complex UIs can hit frame-rate drops. Solution: profile the app on low-end devices during the migration, use native bridges for animations, and keep scroll/gesture performance in native code if needed.
If the cross-platform version performs poorly, can we stay native?
You cannot easily revert. Once iOS Swift and Android Kotlin code are decommissioned, rebuilding it is a 12-week project. Instead, plan carefully: profile the cross-platform framework on real devices before full migration. Identify slow screens early (maps, real-time lists) and keep them native, bridge the rest.
What support and documentation do you provide?
React Native or Flutter architecture guide, native bridge examples for camera, geolocation, and sensors. CI/CD pipeline (Fastlane for iOS, Gradle for Android). Device farm setup for automated testing on real devices (BrowserStack or AWS Device Farm). 2-week pair programming on React Native/Flutter best practices, debugging crashes on each platform, and how to use native modules when needed.

Have a different question? Email the team or read the full FAQ.