Live, private alpha
Roen Labs
- Role
- Founder, self-employed. Designed and built it alone in Python.
- When
- September 2026 to now
- Built with
- Python, FastAPI, Postgres (Supabase), Next.js, Modal, Strava API
An adaptive training engine for road runners, from 5 km to the marathon. It checks whether a goal time is realistic, builds the plan to race day, and re-plans after every run, explaining each change.
- Stage
- Private alpha, about 15 athletes1
- Product
- Engine, API and web app, all live2
- Decisions
- Rule-based and reproducible. AI only reads free text
- Regression check
- 954 plans regenerated on every rule change3
Sources
- 1Founder's count of invited athletes, October 2026.
- 2Live product.
- 3tools/sweep_event_specs.py and the engine's mathematical specification. The repository is private.