The Problem
Clients need high-performance mobile apps but don't want the cost and maintenance overhead of running two completely separate codebases - one for iOS, one for Android - while still expecting a native-quality experience on both platforms.
[SCREENSHOT: Cross-platform app running on iOS and Android side by side]The Solution
Darwinbark delivers cross-platform mobile apps using Flutter and React Native for the majority of projects, and drops to fully native iOS (Swift) or Android (Kotlin) specifically when a project's performance or platform-API requirements make cross-platform the wrong tradeoff.
How We Choose the Stack
Not every app should be cross-platform, and not every app needs to be native. The decision comes down to a few concrete questions asked at the start of every project:
- Heavy device API usage (camera processing, background location, Bluetooth hardware) pushes toward native, where platform APIs are a first-class citizen rather than a bridge.
- Standard CRUD apps with a backend API - the majority of business apps - are a strong fit for Flutter or React Native, where one codebase covers both platforms and ships updates to both simultaneously.
- Existing team or client preference (a client with in-house Kotlin developers who'll maintain the app post-launch) can outweigh the technical tradeoff either way.
Process
Every mobile engagement includes UI/UX design as part of the build, not a separate handoff - the same team designing the screens is building them, which cuts the back-and-forth that happens when a design file has to be reinterpreted by a different developer. Backend integration connects to REST APIs (either an existing client backend or one we build alongside the app), and every project ships with push notifications, in-app payments where relevant, and full App Store / Play Store submission handled end-to-end rather than left to the client.
Features
- Flutter / React Native cross-platform development
- Native iOS (Swift) & Android (Kotlin) when required
- UI/UX design included in every engagement
- REST API & backend integration
- Push notifications & in-app payments
- App Store & Play Store submission handled end-to-end
- Post-launch support & updates
Challenges Solved
Store rejection risk. App Store and Play Store review guidelines shift often enough that a submission built without them in mind gets rejected on things like privacy disclosure or background permission justification - submissions are prepared against current guidelines rather than treated as a formality at the end.
Cross-platform performance ceilings. Flutter and React Native cover the large majority of app requirements well, but list-heavy or animation-heavy screens can hit performance ceilings that a native module bridges around - identifying that early avoids a late-stage rewrite.
Result
Delivered 40+ mobile apps across healthcare, e-commerce, fintech, and on-demand services verticals, with an average 4.5-star App Store rating.
[SCREENSHOT: App Store listing example]
