PRIVACY POLICY.

1. The Zero-BS Philosophy

We build tools for athletes, not data brokers. Our purpose is to deliver high-utility training tools and personalised race plans to help you reach your goals. We use only the data you explicitly share with us. We do not sell, rent, or trade your personal information. Period. The data controller is Cyril Bouchu, Impasse des Grillons 3, 1635 La Tour-de-Trême, Switzerland, reachable at [email protected]. WattX is the name of the platform.

2. What We Collect and Why

We do not buy or sell health data. Training metrics you explicitly enter — such as threshold power, swim pace, run pace, or body weight — are stored to power your personalised tools. They are not sold or used for advertising. We also store your race history, training plan data, equipment details, injury logs, and test results, all of which you enter voluntarily. Sending a workout to Garmin does not require a WattX account and does not save your activities. After you sign up, and only then, we keep a copy of the activities Garmin sends for that account, plus any archive you import. That copy can include duration, distance, heart rate, power, and location, and we use it to calculate training load. WattX does not process Garmin device data with an artificial intelligence system, and does not use it to train one.

3. Cookies and Analytics

WattX does not use third-party tracking cookies or analytics services. We do not embed advertising pixels or share browsing behaviour with any external platform. When you sign in, authentication tokens are stored in your browser so you stay logged in; sign-in requests are processed by Supabase (EU), our database provider. We do not use your account data for marketing or profiling.

4. Device Cache & Cloud Sync

WattX keeps a copy of your data on your device so tools load quickly and work offline where possible. When you are signed in, we sync your athlete profile, training plan, race vault, injury log, equipment rack, and test history to your cloud account so phone, tablet, and laptop stay aligned. That training data is stored in Supabase (EU) under GDPR and Swiss FADP standards. Transactional email (for example plan summaries or contact replies) is sent via Infomaniak (Switzerland). We do not sell your data to either provider or anyone else.

5. Connected Apps & Hardware Integrations

To provide a seamless training experience, WattX allows you to connect your account to third-party training platforms and device manufacturers. When you initiate these connections, we use secure, industry-standard authorization (OAuth). We only request the minimum permissions necessary to push your structured workouts or read required metrics. We do not store your external passwords. You can revoke WattX's access from the connected service, and from the connect dialog in WattX. Once your data is pushed to an external device or platform, its handling is governed by the privacy policy of that respective company.

A Garmin connection uses OAuth. We never ask for your Garmin password. Sending a workout does not need a WattX account. The Garmin token stays on our server so that send can happen. We save a copy of your activities only after you sign up. That copy — new activities after sign-up, plus any archive you import — is what Analysis uses, and we calculate training load from it. We do not forward those activities to another app. Disconnect deletes the token. If the grant belongs to your account, disconnect also deletes the copy. How Garmin handles a workout after it arrives is described in the Garmin Connect privacy notice.

An Intervals.icu API key stays in this browser. It is sent through our server only to complete a sync or an analysis load you start, and we do not store it.

6. Your Rights — The "Nuke It" Clause

You can delete your account from Profile & Data in the menu. Deleting the account removes your login and the synced profile, training plans, race vault, injury log, equipment, test history, Garmin connection, and stored Garmin activities from our servers, and clears this device. Payment records already processed remain with the payment provider for accounting. You can also clear only this device's copy from the same screen; that leaves the account in place. For anything else, contact [email protected] or wattx.ch/contact.