Intervals.icu
FreeWhere your data lives. Your watch syncs here, STAS reads and writes the plan.
- Training history
- Where the plan lives
- Fitness metrics (Fitness, Form, Load)
- Notes and analysis from STAS
- Garmin, COROS, Polar, Suunto, Amazfit
Connect Garmin, COROS, Polar, Suunto or Amazfit — get sharp analysis and push a real plan straight to your calendar.

STAS hands it your data — history, fitness, plan. The AI works with your numbers instead of guesses.
Where your data lives. Your watch syncs here, STAS reads and writes the plan.
Fast channel: the bot speaks, you answer with voice or text.
Custom GPT with direct access to your data. Analysis and plans through normal conversation.
Independent memory layer. Chat forgets between sessions — STAS remembers.















