Caset

Nearly seven years into its existence, Apple Music still lacks a collaborative playlist feature. Caset, a new iPhone app by indie developer Srihari Srinivasan, aims to fill this gap with the ability to create shared mixtapes with friends and family. Caset lets you create shared lists of songs that you can share with other people using a unique Caset link that reopens the shared mixtape in the app. What’s unique about Caset is that it integrates very nicely with Apple Music: when you press the + button to add songs to a mixtape, you’ll see shortcuts to pick songs from your recently played items, your favorites, your new albums, and more. On top of this, Caset supports notifications for new tracks added to shared playlists and lets you react to songs with iMessage-inspired reactions. If Apple ever adds a shared playlist functionality to Apple Music, I think it’s going to look very similar to Caset.