In the next few hours(ish – could be tomorrow) I’ll be moving the app to a new location.
It’s also been rewritten, the core features are all still there, and any others that aren’t are probably work in progress (so don’t ask). The new version is entirely client side. As a result you’ll need a Spotify account to use it (not Premium, just any Spotify account).
The reason for this is that it can’t keep secrets being 100% client side and the PKCE flow for Spotify requires login even if you don’t request any special access scope (or at least it seems to – if someone knows better please let me know). There’s no logging of any of the data, including who logged in beyond what Spotify’s API will log when you authenticate – feel free to inspect the network tabs etc.
Auth flows now happen in a separate tab (or window) which will close when it completes, so you don’t lose where you were or end up with a new tab focused.
Old links will be redirected temporarily, until the old app expires in about three months.