Open source · EU-hosted · AGPLv3 — endurance training without the lock-in.
The ethical European alternative to TrainingPeaks and Strava.
Open-source endurance training platform. Your data stays in the EU, your algorithms are auditable, your training is yours. Built by an ultra-trail runner in Grenoble.
Hidden trade-offs
Your training data deserves better than a US data silo
Vendor lock-in.
Your years of training history live inside a black box you can't audit, export fully, or move.
Opaque algorithms.
TSS, CTL, fitness scores — you have no idea how they're calculated or whether they fit your sport.
Data sovereignty.
Your most intimate biometric data is processed and stored under non-EU jurisdiction.
An honest, open-source training platform
Open and auditable.
All code under AGPLv3 on GitHub. The training load formulas live in the source, you can read them, propose changes, or fork the project.
EU-first, GDPR-native.
Built in Grenoble, hosted in France. Your data never leaves the European Union.
Your data, your choice.
Use our managed Cloud, or self-host on your own server with one Docker command. Full export anytime.
Built for serious endurance athletes
Training planning
Build your plan freely, import templates, organize your season.
Load & recovery tracking
Transparent CTL/ATL/TSB calculation, fitness/fatigue/form curves.
Device sync
Import activities from Strava, Garmin, Polar and Suunto, and send planned workouts to Garmin and Suunto watches. Coros is coming.
AI session helper
Generate workout structure from a natural-language prompt. Always editable.
Voice notes
Quick post-session voice reflections, transcribed and saved.
On your phone
An app you install from the browser on iPhone and Android, and an iOS app in beta.
OpenAthlete vs the alternatives
| Feature | OpenAthlete Cloud | TrainingPeaks | Strava | Intervals.icu |
|---|---|---|---|---|
| Open source code | AGPLv3 | |||
| Self-hostable option | Free | |||
| Data hosted in EU | France | US | US | Mixed |
| GDPR-native | ||||
| Transparent algorithms | Code audit | Black box | Black box | Partial |
| Full data export | Native | Limited | Limited | |
| CTL/ATL/TSB tracking | ||||
| AI session generation | Your key, or included | Premium | ||
| Price | Free, or €5/mo Supporter | $19.99/mo | $11.99/mo | Free (donation) |
Grounded in sport science, transparent in implementation
OpenAthlete uses well-established training load metrics from sport science literature — including CTL, ATL, TSB, and TSS — so you can reason about fitness, fatigue, and form in a familiar way. The formulas are implemented in the source code and documented alongside the product.
AI features are helpers: they can generate session structure from a prompt and surface fatigue-related signals from your data. They do not replace a coach's judgment and do not guarantee injury prevention. We don't claim AI prevents injuries. We claim it helps you see what your data is already telling you.
Pricing
The whole app is free. Supporters fund its development and get unlimited athletes and AI included. Self-hosting stays free forever.
Prices include VAT where applicable.
Self-Host
- Full app, all features
- Your server, your rules
- Community support (Discord)
- AGPLv3 license
Cloud Free
- Every feature, hosted in France
- Strava, Garmin, Polar and Suunto sync
- AI with your own provider key
- Coach up to 5 athletes
Supporter
- Everything in Cloud Free
- Unlimited coached athletes
- AI included every month, no key needed
- Funds an independent, open-source project
- No commitment, cancel anytime
Open source. Funded by athletes, for athletes.
OpenAthlete is built by one developer in Grenoble, with the help of an open-source community. We don't take VC money. The project is funded by Supporter subscriptions and Patreon backers. This means we answer to athletes, not investors.
- GitHub Sponsors
- Patreon
- Supporter subscriptions
Frequently Asked Questions
Train smarter. Own your data.
Free on Cloud, Supporter from €5/month. Self-hosting is free forever.