Privacy
Do Re Mi — doremi.knowwhatson.com
Do Re Mi has no accounts and no sign-in. Most of what you do never leaves your phone.
Stays on your device
Songs you load, the charts built from them, your settings, your tap calibration and your personal best scores all live in your browser's storage. They are not uploaded, and clearing your browser data deletes them for good.
Leaves your device
Two things, and only when you do something that needs them:
- A leaderboard score — the song, difficulty, length, score, accuracy, best combo and the time, sent with a random id this app generated for your device and whatever display name you typed. The id is not linked to you, your phone or any other app.
- Your player profile — level, Do Coins, day streak and unlocks, stored with the same random device id so your progress follows you. Do Coins are earned only by playing and can never be bought.
- A song you chose to share — its title and artist, plus either a YouTube video id or, if you uploaded audio, the audio file itself. The checkbox shown when you add a song is what decides this, and you can delete anything you shared.
Other companies
- YouTube (Google) — YouTube levels play in YouTube's own embedded player, which sets its own cookies and applies Google's privacy policy. Nothing is downloaded from it.
- Apple — the iTunes Search API supplies song titles and cover art.
- Supabase hosts the library and leaderboards; Vercel hosts this site.
Measurement
No advertising and no profile building, and nothing is ever sold or shared for marketing. We do use Google Analytics to see which songs get played, how long runs last, how they go, and what people search for — the search terms are included, because the songs people look for and don't find are exactly the ones worth adding. Google sets its own cookies for this under its privacy policy. Settings → Share anonymous stats turns it off entirely.
Removing things
Settings → CLEAR SCORES wipes your local bests. A song you shared can be deleted by you from the library — nobody else can delete it, and nobody else's can be deleted by you. For a leaderboard entry or anything else, get in touch.
Contact: games@knowwhatson.com
Last updated 17 August 2026.