Fast, secure and beautiful Android apps built with Kotlin and Jetpack — from MVP to millions of users on Google Play.
250+ projects delivered
Android powers most smartphones in the world, which makes it the fastest way to reach a large audience. Gamostar is an Android app development company that builds native apps in Kotlin and Java using modern Android architecture (MVVM, Jetpack Compose, Coroutines, Room and Hilt).
We build for the whole Android ecosystem: phones, tablets, foldables, Wear OS and Android TV. Every app is tested on real devices across screen sizes and Android versions, optimised for battery and start-up time, and prepared for a smooth Google Play launch.
From on-demand and fintech apps to real-time multiplayer games, our Android developers deliver clean, maintainable code and hand over the full source code.
Kotlin / Java apps designed around your business goals and users.
Modern, smooth interfaces with Material Design and dark mode support.
Payments, maps, push, analytics, social login and any third-party SDK.
Profiling, lazy loading and optimisation so your app feels instant.
Store listing, ASO, signing, staged rollout and policy compliance.
Java → Kotlin, XML → Compose and OS-update compatibility for existing apps.
Secure payments, KYC and biometric authentication.
Live GPS tracking, ETAs and dispatch.
Multiplayer and casual games with real-time servers.
Fast catalogs, checkout and push offers.
| Project type | What is included | Typical timeline |
|---|---|---|
| MVP / first launch | Core features, one platform or cross-platform build, basic admin panel | 8–12 weeks |
| Full-featured app | Complete feature set, Android + iOS, advanced admin, integrations, analytics | 4–6 months |
| Enterprise / marketplace | Multi-role platform, custom workflows, high-scale backend and compliance | 6 months and more |
Timelines depend on scope, integrations and how quickly feedback is shared. We confirm exact effort and cost after a short discovery call.
A senior team that has delivered 250+ games, apps and platforms for startups and enterprises worldwide.
Weekly demos, a shared task board and clear milestones — you always know what is happening.
NDA before we start, encrypted data, secure APIs and best-practice authentication.
Full source code, design files and documentation are handed over to you.
Bug fixing, OS-update compatibility, monitoring and feature upgrades under flexible plans.
We work with clients across India, the USA, the UK, Europe and the Middle East.
We study your idea, audience and competitors, then define scope, features and a realistic roadmap.
Clickable prototypes and a polished, conversion-focused interface that you approve before development.
Short sprints with weekly demos, clean code, secure APIs, payments and third-party integrations.
Real-device testing, performance, load and security checks before every release.
Store or server launch, monitoring and ongoing maintenance after go-live.
A defined scope, timeline and price. Best for MVPs and well-documented requirements.
Developers, designers and QA working only on your product, on a monthly basis.
Flexible hourly engagement for evolving scope, audits and ongoing improvements.
Cost depends on features, screens, integrations and backend. We give a free estimate within 24 hours of understanding your requirements.
Kotlin is Google's recommended language and is used for all new projects. We use Java only when maintaining existing code.
Yes. We test on real devices across different screen sizes, manufacturers and Android versions.
Yes. After a short code audit we fix bugs, modernise the code and add new features.
Yes. We prepare the listing, handle policy requirements and manage the release.
Share your idea and get a clear plan, timeline and estimate within 24 hours. No obligation.
NDA signed on request · Full source code ownership · Weekly progress demos