Privacy

Your files never leave your device. Splitly decodes and analyzes .fit files entirely in your browser using JavaScript. No file contents, filenames, results, or body mass are transmitted to any server operated by us — there is no backend, no account system, no analytics, and no cookies.

Hosting. This is a static page served by Cloudflare Pages. Cloudflare may process standard connection metadata (such as IP address and request logs) as part of delivering the page, per Cloudflare's own privacy policy. We do not receive or store any of that data.

Local state. Your body mass is kept in this browser's localStorage and mirrored into the page URL (?w=) so it survives refreshes and travels with shared links. Nothing else is stored anywhere.

Contact. If you have questions about this policy, open an issue on the project repository.

Last updated: September 2026.