01 · Growth1M → 6M+
When I took full ownership of the Android app it had a million installs. Today it has over six million, and revenue has grown 10×.
I’m a senior Android developer. For five years I’ve built apps in Kotlin and Compose. I took one from 1M to 6M+ installs, migrated it from Java to Kotlin, and made it faster and more stable along the way.
Installs6,000,000+up from 1M
10×revenue growth
On Android5+ yearssince 2019
MigrationJava → Kotlin
100% Kotlin, the whole app
FeaturedGoogle I/O 2026
6M+ INSTALLS ✦ 10× REVENUE ✦ JAVA → KOTLIN ✦ 5 YEARS ON ANDROID ✦ GOOGLE I/O 2026 ✦ 100K+ DOWNLOADS ON MY FIRST APP ✦
Case study · 2021 – now
Gratitude
A mindfulness app for journaling, affirmations and vision boards, with 100M journal entries and 150K five-star ratings. I’ve owned its Android app since 2021.
02 · The Kotlin rewriteJava → Kotlin
I migrated the entire app from Java to Kotlin and brought it up to modern Android practice. That made it faster, more stable and easier to build on.
03 · Widgets+25% retention for widget users
With Narendra Aanjna, I rebuilt every widget in Jetpack Glance in under a month, in about half the usual time. The widgets have dynamic colour, free resizing and personalised previews, and users can pin them from inside the app. Now 10% of daily users have one, logging about 1K journal entries a week from the home screen.
Featured on the Android Developers Blog ↗One Glance widget, every size
04 · Speed and qualityFewer crashes. Faster releases.
Baseline profiles for faster cold starts, profiler-led fixes and quicker crash triage, plus a release process that’s faster and more reliable. The time saved went into new features, like AI image generation for vision boards.
Featured on the Android Developers Blog ↗05 · Listening to usersCalls, not dashboards.
I talk to users directly, by call and by email. Then I work with design and product to turn what they tell me into features that feel calm and joyful.
06 · ArchitectureBuilt to scale.
I reworked the app’s architecture and build system so it scales, stays maintainable and ships with confidence as it grows.
Featuredon the Android Dev Blog.at Google I/O 2026.for widgets and speed.
Android Developers Blog · May 2026Gratitude saw 25% higher retention for widget users ↗Android Developers Blog · Sep 2025Gratitude’s developers and Gemini in Android Studio ↗
Google I/O · 2026Gratitude featured at Google I/O 2026
Beyond Gratitude
Quitt
My own Android app for quitting habits, built solo in Compose with three Glance widgets.
habitquitt.app ↗Photostat App
My first app with real users: a document scanner that won a state-level award.
The path
- Senior Android Developer · Gratitude2023 – now · architecture, build system and performance
- Android Developer · Gratitude2021 – 2023 · 1M → 6M+ installs, 10× revenue, Java → Kotlin
- Software Engineer Trainee · Paymentus2021 · Android, Kotlin
- Android internships · HelpNow, GoGaga, Unihyr2019 – 2020 · MVVM apps, UI and crash fixing