Build Android Apps That Work Perfectly on Every Device

You do, 100 percent. We transfer full legal ownership of source code repositories, UI/UX design assets, and backend architecture to your company upon milestone completion and payment. This is not a verbal assurance. It is written into the Master Services Agreement before a line of Kotlin or Java is written.

We bypass emulation entirely for fragmentation testing. Your app is tested across a physical device matrix of 50+ real Android smartphones covering varying screen sizes, aspect ratios, processor chipsets, and OS versions from Android 11 through Android 16. That means Samsung, Google Pixel, and Motorola devices under real conditions and not a software simulation of what those devices might do.

Native Android in Kotlin gives you the best performance, deepest platform integration, and full access to the Android feature set. Cross-platform in React Native or Flutter makes sense when your users are split across Android and iOS and doubling the development cost is not justified by the performance difference. The right call depends on your users, your performance requirements, and your timeline and not a blanket preference. We advise on this before the build starts.

A focused MVP with core features typically takes 3 to 5 months when scope is clearly defined before development starts. A more complex app with multiple user roles, custom backend infrastructure, and third-party integrations usually runs 5 to 9 months. The most common reason timelines slip is scope that was not fully defined at the start and requirements that expand mid-sprint consistently push delivery out.

Yes. We handle this regularly. We start with a code review — what exists, what works, what is broken, and what technical debt is sitting underneath it. We do not build on top of a shaky foundation. Problems get identified and a clear plan gets built before new code is written.

Our primary stack for native Android is Kotlin, with Java for legacy systems and existing codebases. For cross-platform we use React Native and Flutter depending on project requirements. Backend integrations are built around REST APIs, with Firebase, AWS, and custom Node or Python backends depending on the product architecture.

Post-launch support covers performance monitoring, crash reporting, OS compatibility updates as new Android versions release, bug resolution, and feature development. Android releases a major OS update annually and each one can affect app behavior so InvoZone stays involved to make sure the app keeps working properly as the platform evolves around it.