TRAINAA is an open-source endurance training app based on LLMs and agent systems.
Bring your own OpenRouter API key and use the app for free!
or download the app:
And dont forget to Join our Discord
The app is in a early stage of development, so dont expect it to be perfect yet. But there is also a lot of potential and you can be part of the journey to build the best endurance training app for everybody.
To get started locally, follow the instructions in the Getting Started Guide.
We welcome contributions from the community! If you're interested in contributing to TRAINAA, please check out our Contributing Guide for guidelines on how to get involved.
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More integrations — Apple Health, Polar, Suunto, Corso etc. (Strava does not allow integration.)
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Goal setting — Users can set explicit goals (e.g. a target race with date, or general objectives like "stay fit" or "lose weight"). Goals are extracted from chat by the agent today; explicit goal-setting UI comes next. Goals are injected into the AI context to personalize all coaching.
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Auto-generated training plans — Reactive system that generates and adjusts training based on goals, training history, and completed/missed sessions without the need for constant user interaction. Includes explicit "generate training" actions so users don't have to chat for every plan update.
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Improve training plan generation — Include more algorithmc logic into the backend (e.g. periodization, recovery weeks, tapering) rather than relying on the LLM to figure it out. More structured prompting and post-processing to ensure valid plans.
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Workout analytics & trends — Personal records, volume/intensity over time, progress toward goals.
- AI backend overhaul — Migrate away from LangChain to direct SDK calls for more control, better debugging, and lower abstraction overhead. Improve prompt engineering and coaching quality.
- Different trainer personalities — Choose coaching styles (strict, encouraging, data-driven, etc.).
For a detailed roadmap a github project is set up.
Distributed under the AGPL License. See LICENSE for more information.
Permission to use the software under AGPL-3.0 does not include the right to use the trademarks, logo, or name "TRAINAA".