How It Works

Yes. We only request read-only access to your Spotify playlists and don't store any personal data on our servers. All authentication is handled securely through official Spotify and Apple Music OAuth 2.0 flows. Analysis results are cached locally in your browser's storage.

You need a Spotify account (free or premium) to view and analyze your playlists. An Apple Music subscription is only required if you want to create playlists and listen to the discovered Atmos tracks. You can still see the analysis results without Apple Music.

We search Apple Music's catalog directly using their API, which provides official Atmos availability data. Accuracy depends on how well we can match tracks between the two services. Some tracks may have different spellings, release versions, or regional availability, which can affect matching. The app shows match confidence to help you identify potential mismatches.

Some tracks may not be available on Apple Music, have different metadata between services, or exist as different versions (e.g., remastered, deluxe editions). Regional licensing can also affect availability. The app does its best to match using artist name and track title, but exact matches aren't always possible.

Yes! You can analyze as many playlists as you want. Results are cached in your browser to make repeat analyses instant. You can clear the cache from the settings menu if needed.

Analysis time depends on playlist size and Apple Music API response times. Each track requires a search query, so larger playlists take longer. First-time analysis of a playlist is slower, but subsequent checks are instant thanks to caching. A typical 50-song playlist takes about 1-2 minutes.