Privacy: your ride and music stay on your device

Your video and music

The ride video you load plays straight from the file on your device. It is never decoded into memory, copied, stored or sent anywhere. The tracks you load are decoded by your browser for the parts your segments use, stretched in a background worker on your device, and let go when they are no longer needed. The music file and the PDFs the builder makes are saved where you choose.

The files are not kept between visits. A saved freestyle remembers each file's name, size and length, so it can tell you which files to load again, and nothing else about them.

What stays on your device

Your segments, taps, tempos, track settings, drawn lines and choices are written to your browser's own local storage, under keys beginning with freestylebuild and nowhere else (one of them is a short test that storage works, removed straight away). There is no server side to this site: it is a set of static files. It belongs to one browser on one device: it does not follow you to another computer, it is not backed up by us, and nobody else can read it. Clearing site data for this site removes it permanently. Use Save a backup file to keep a copy; that file is saved wherever you choose and is yours to keep or delete.

The magic step saves nothing at all.

No accounts

There is no sign up, no sign in, no email capture and no password. Every page, including the builder and the exports, works without identifying yourself in any way.

What is collected

No account, no advertising identifiers, and nothing you enter. Standard web server logs kept by the static host may record the request for a page, its time and a network address, in the ordinary way any web server records a request.

Page counts

If page visit counting is switched on for this site, visits are counted through Cloudflare. The count sets no cookie, cannot follow you to another site, and records that a page was opened, never what you typed.

Purchases

If paid plans are offered, a purchase is handled by RevenueCat and Stripe, who receive what a payment needs, such as your email address and card, and never your files or your work. An anonymous purchase id is stored in this browser so your access is recognised here.

Typeface and libraries

Headings are set in Cormorant Garamond by Christian Thalmann, and the PDFs in Fraunces by Undercase Type, both under the SIL Open Font License 1.1. Both fonts are served from this site, so no font service sees your visit. The licences sit beside them at /fonts/OFL.txt. The time stretch library runs on your device and contacts nothing.

Cookies

Kurtempo sets no cookies of its own and carries no advertising or cross site tracking scripts.

Changes

If this policy changes in a way that affects what is collected, the change will appear on this page.

Contact

Questions about privacy go to [email protected]. Since nothing is stored on a server, most requests are answered by telling you which local storage keys to clear.