Need an app developer for hire? Work with Koecha Labs' mobile app developers to design, build, and launch iOS and Android apps, or to take over and improve an app you already have. Five-star rated by clients on every reviewed Upwork contract.
Build iOS and Android apps with React Native and Expo
Integrate APIs, auth, payments, and subscriptions
Ship to the App Store and Google Play
Fix, extend, and modernize existing apps
1. Share your requirements
Tell us what you are building, your timeline, and your budget.
2. Discovery call and plan
We talk it through and send a scoped plan with milestones and cost.
3. Start building
Development begins with regular demos and progress updates.
Project-based
A defined scope delivered in milestones, from first release to launch.
Ongoing development
Continuous feature work, fixes, and updates for a product that is already live.
FAQ
Most projects start from $5,000 and scale with the number of features, integrations, and platforms involved. After a short discovery call we send a scoped estimate with clear milestones, so you know the cost before any work begins.
We usually reply within one to two business days. After a discovery call and an agreed plan, development can begin as soon as the scope is confirmed.
Yes. We audit the codebase, stabilize it, and continue development, including updates for new iOS and Android versions.
Yes. Our mobile app developers build for both platforms from a single React Native codebase, with native code where a feature needs it.
Client Feedback
★★★★★ 5.0 on every rated Upwork contract.
“It has been a pleasure continuing to work with Peter. This is my second contract with him, and once again, he has been incredibly accommodating, responsive, and genuinely helpful throughout the process. He consistently goes above and beyond to address concerns, troubleshoot issues, and ensure everything is handled with care and quality. Peter is a clear communicator, solution-oriented, and committed to delivering strong results. I highly recommend working with him and would gladly collaborate with him again in the future.”
“Working with Peter has been a great experience. His communication is outstanding, and he is extremely patient and supportive. He genuinely goes above and beyond to help you understand each step and guide you in the right direction. I couldn’t recommend him more.”
“Peter is a pleasure to work with! I am extremely impressed by his in-depth skills and knowledge of coding and his ability to work fast and effectively! Very thankful to have found Peter and will keep working with him in the future! Would highly recommend to anyone looking for a talented and professional developer!”
Tell us about your project. We will come back with a clear plan, timeline, and cost.