Hey - I'm one of the developers working on Calendia, a mobile app which helps you keep track of all the media that you're interested in and receive notifications about releases.

Current features:

1. Follow movies, TV shows, music artists, video games, books, actors, and authors.

2. Calendar list view, which contains all upcoming and previously released media that you follow. For instance, if you follow an author, you'll see all their books on this feed. If you follow a TV show, you'll see all the episodes!

3. Push notifications when content you follow is announced or released. You can also configure which types of media you receive notifications for.

4. Home screen containing upcoming and trending movies, TV shows, video games, books, albums, and artists.

5. Import artists from your Apple Music library and public Spotify playlists.

Let us know if you have any feedback! Happy to answer any questions as well :)