Carril
Training log, weekly plans and rankings for swimmers and their clubs.
- Industry
- Sports · swimming
- What we did
- Own product: brand, design, app and API
- Platforms
- iOS · Android
- Year
- 2026
01 — The challenge
Logging has to be as fast as swimming.
Swimmers train with the lane whiteboard and their watch, but generic fitness apps don’t understand sets, strokes or times by distance.
Carril exists so that logging a workout takes seconds, and so that the club has a reason to come back every week.
02 — How we approached it
Built for the lane, not the gym.
We designed more than 40 screens around three moments: logging the workout, seeing progress and competing with your club.
Load the whiteboard
Pick your lane and the day's sets load on their own. You only confirm what you did.
Rankings by category
Percentage improvement, masters categories and challenges: you compete against your own progress, not just the fastest swimmers.
Connected health
Syncs with Apple Health and Health Connect so nothing is logged twice.
03 — What we solved
Beta ready for swimmers.
- More than 40 screens designed, from onboarding to club management.
- Test builds for iOS and Android.
- Streaks, challenges and personal bests with their own identity.
- Instant updates with Illapush.
04 — Stack
- Expo
- React Native
- Unistyles
- TanStack Query
- Hono
- Cloudflare Workers
- PostgreSQL
- HealthKit
- Health Connect