Mac: Music streaming service Spotify is awesome, but it has one problem. When you're listening to compilations or radio, you sometimes come across artists you hate. Denied fixes that by creating simple rules.
The app runs in the background and monitors what Spotify is playing on your Mac. If you set up a rule to skip any track that has the artist "Rebecca Black", that's exactly what Denied will do. You can set rules for artists, albums and track names, filtering if the field should match exactly with the keyword, start or end with it, or just contain it.
In the free trial version, you can create three rules. The full $8.99 app lets you unlock unlimited rules. Denied can be toggled on and off with a simple switch, and it shows you statistics and notifications of how it has saved you from terrible music.
Denied (Free trial, $8.99 to unlock)