Do I need to create an account?

There's no Zenbu account to sign up for. Logging in uses your existing AniList account, and it's entirely optional — you can browse and watch without logging in.

AniList is Zenbu's primary tracker and data layer. Logging in with AniList unlocks your personal library list, watch history, and automatic progress tracking. You can also connect a SIMKL account in Settings as a scrobbler to mirror watch history across devices.