Bring your own AI key. Sync to the apps you already use. Science-backed periodization for cyclists, rowers, and runners.
Coggan power zones, CP/W’ model, polarized periodization, and event-specific phase shaping. Not generic intervals.
Connect intervals.icu, Strava, or upload FIT files. Workouts sync as ZWO files to Zwift, Wahoo, Garmin, MyWhoosh, and 250+ more.
Bring your own Claude, GPT, Gemini, or Grok key. We never store fitness data beyond what you choose to give us.
You add your own API key from Anthropic, Google, OpenAI, or xAI. When your plan is generated, the AI runs on your account, using your tokens. We never see your training conversations. Your key can be stored encrypted on our server for convenience, or kept only in your browser so it never touches our database at all.
Gemini Flash is free with a Google account. A typical plan generation costs $0.01 or less.
If it helps your training, consider supporting it. Like intervals.icu, this runs on the generosity of athletes who find it valuable.
Buy me a coffee