Privacy policy
Trace, the sprint analysis app by Kongy Labs. Effective 8 October 2026.
What Trace stores, and where
Everything you add (runners' names, times, distances, notes, the marks you place on a video, and your settings) is stored only in your browser's storage on this device. Videos you analyze are stored in the same place so you can watch and re-time them later. None of it is sent to Kongy Labs or anyone else.
Clearing this site's data in your browser deletes it. You can also erase everything from Settings.
Videos and the camera
When you choose a video, Trace reads it from your device and plays it in the page. Frame stepping, timing and every calculation happen in your browser. Trace never uploads a video. If a future version uses your camera (for the live gate timer), the picture will be processed on your device in the same way.
Things that leave your device only when you choose
- Share cards and videos. When you share a card or a clip, Trace hands the file to your device's share sheet or downloads, and it goes wherever you send it. Those services' own privacy policies apply.
- Backups. A backup is a file you download. It contains your times, splits and settings, not your videos.
Network requests
The website is served by Cloudflare, which processes standard request data (such as IP address) to deliver the page. Trace itself sets no cookies and runs no analytics.
Data collected by Kongy Labs
None. We do not collect, sell or share personal data, and Trace contains no advertising or third-party tracking code.
Children
Trace is not directed at children under 13 and collects no data from anyone. Coaches recording young athletes should have a parent's permission to film them.
Changes
If this policy changes, the new version will be posted on this page with a new effective date.
Contact
Questions: [email protected]