Last updated 13 September 2026
Slippy is a radio that finds music you have not heard and plays it through YouTube. This page says exactly what it does with your information.
A song you name, a link you paste, or a mood you pick goes to our server to work out what to play. If you give Slippy a playlist file, its contents are read on our server to work out which artists and songs you like. The file itself is not saved.
If you connect YouTube, Slippy asks Google for the names of your playlists and the titles of the videos in the playlist you pick. It does not read your watch history, your subscriptions, your comments or your channel. Those titles are sent to Google's Gemini model to turn them into artist and song names.
You can use the radio without an account. Signing in is by Google or by a link sent to your email, both handled by Firebase, which is Google's sign in service. Slippy receives your email address and an id.
Your account holds your email address, your plan, the artists and songs from the playlist you gave Slippy, the songs you liked and the ones you threw out, every song Slippy has already played or shown you so it never repeats one, your saved playlists, whether you want the weekly email, and the reference ids for your subscription. It is kept in Google's Firestore database in its Johannesburg region.
Signed out, our server keeps nothing about you. Your own browser keeps your volume, which music app you picked, the songs a signed out radio has played, and whether you have dismissed the explanatory notes, all of which clear with your browser data.
Payment is handled by Polar. Your card details go to Polar and never to Slippy. Polar tells Slippy whether your subscription is active and gives it an id so you can reach your billing page. Polar's own privacy policy covers what it holds.
Whole songs play in YouTube's own player, embedded on the page. While a song plays, your browser talks to YouTube directly, so YouTube may set its cookies and knows what was played, under Google's Privacy Policy. The thirty second previews in saved playlists come from Deezer's servers the same way.
Slippy uses YouTube API Services. If you connect YouTube, the token that lets Slippy act for you is held in a cookie that JavaScript cannot read, for up to a year. Disconnect YouTube removes it, and you can also remove Slippy's access at your Google account permissions page. Connecting also means agreeing to YouTube's Terms of Service.
To find music, Slippy sends artist and song names, never anything that identifies you, to Last.fm, Deezer and Google's Gemini model. Gemini also receives the mood you type in and the video titles from a YouTube playlist you import.
Slippy sends email through Resend: the weekly reminder if you asked for one, and replies to anything you write to us. If you write to us through the help button, your message, your email address if you gave one, and basic details about your browser are emailed to us so we can answer.
Your internet address is used in memory to slow down scripts. It is not stored.
No advertising of its own, no tracking pixels, no analytics that follow you elsewhere, and nothing is sold or handed to anyone for marketing. The ads inside YouTube's player are YouTube's.
The Clear link on your playlists page removes your saved playlists at once. To delete your account and everything on it, or for any question about this page, use the help button on the site or write to zarkza@gmail.com.