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I will convert your java android app to kotlin with clean architecture
Reo Joats
About this gig
Still running your Android app on Java?
Google recommends Kotlin for all new Android development. Kotlin means less code, fewer crashes, and easier updates with Jetpack Compose.
I will manually convert your Java code to modern, idiomatic Kotlin. No blind auto-convert tools that break your app.
What you will get:
- 100% manual conversion for safety
- Coroutines instead of AsyncTask/Callbacks
- Null-safety fixes to kill NPE crashes
- Clean code that follows Android best practices
- Full source code + buildable project
Why me, Reo Joats?
3+ years Kotlin + Android. Udacity Android Nanodegree. I've shipped 20+ apps to Play Store and migrated legacy projects without downtime.
Important: Message me with your project before ordering. I'll review your codebase size and give you an exact quote + timeline. Migrations are custom work.
Stop maintaining old Java code. Lets make your app future-proof.
Get to know Reo Joats
Reo Joats
Kotlin Expert And Jetpack Compose Android App Developer
- FromUnited Kingdom
- Member sinceApr 2026
- Avg. response time1 hour
Languages
Spanish, English, German, Italian, French
Hey, I’m Reo. I build Android apps with Kotlin + Jetpack Compose.
Been doing this 3 years. Mostly Firebase apps, chat apps, e-commerce. I’m Udacity certified but honestly the real proof is in the Play Store.
If your app is still in Java or your UI looks 2018, I can fix that. You get clean code, no drama, and I’ll handle Play Store publishing.
DM me your idea before ordering so I can give you a real timeline.
Other Mobile App Development Services I Offer
FAQ
Do you use the auto-converter in Android Studio?
No. Auto-convert creates messy code. I rewrite each class manually so it’s clean, null-safe, and uses Kotlin features like data classes and coroutines.
Will my app still work the same after conversion?
Yes. Functionality stays 100% identical. Only the language changes. I test each module after converting.
How many files can you convert?
Depends on package. Basic: up to 10 classes. Standard: up to 30. Premium: up to 60 or whole small app. Send me your project for exact count.
Can you also upgrade to Jetpack Compose?
Yes, but that’s a separate gig. First we convert to Kotlin. Then we can rebuild UI in Compose. Message me for a bundle deal.
