Fitness tracker for a niche sport

Mobile engineer · 2026

A native Android app from an empty repository to release, and new features released on a live iOS app.

  • Kotlin
  • Swift

Problem

The existing training tracker was available on iOS but not on Android.

Approach

The Android app was written natively in Kotlin from the first commit; the existing Swift app was kept running and extended with new features.

Result

Both apps are in production.

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