Faster on Android.
And measured.
An app that rewards walking, steadier and faster to start on Android.
- Year
- 2026
- Duration
- Ongoing
- Team
- 1 senior
- Stack
- React Native · Android
Context
WeWard rewards 20M+ users for walking, with a React Native app. A senior works inside the tech team on Android stability and performance.
The challenge
Slow starts, crashes and freezes hurt the experience. And without reliable measurement, there was no way to know whether an optimisation really helped, or whether a release regressed.
What we shipped
- Targeted fixes for Android freezes
- Startup initialisation reviewed and trimmed
- A benchmark bench on physical phones, 10 cold starts per run
- Two tracked metrics: first frame and a usable home screen
- Reports that compare releases and catch regressions
A similar problem?
30 minutes with a senior to talk it through, free.
More work
01 / MISTRAL AI · NATIVE PLATFORM
Le Chat
Three months on Le Chat mobile during hypergrowth: native file-preview module, share intent, iOS widgets and an Android tile.
49PRs merged in 3 months
~60 %of the work in native
02 / SEPHORA · MULTI-COUNTRY MONOREPO
Multiple apps.
One codebase.
One monorepo, three apps for Europe and the Middle East. Each country gets its typed settings on launch, LTR and RTL alike.
60app variants, one repo
0per-country forks