Watch it work. Then set it up.

Connect a service to play. 4789 plays through compatible services you connect yourself. Paste the service's API key and tap Test key. 4789 validates it without revealing it, and the key stays in the device Keychain.

Add a catalog (optional). A compatible manifest or install URL fills Discover and the Wall with browsable titles. You can add, reorder, or remove catalogs at any time.

Everything you have added lives here: catalogs, list connections, and subtitle providers, in the order 4789 asks them. Add a new one by pasting its manifest or install URL. A success message confirms the connection, and its titles or sources appear in the library right away.

Keys for the services you connect. Each field is masked on screen and stored only in this device's Keychain — never on a 4789 server, because there is none. Test key confirms a key works without showing it. After a fresh install or on a new phone you enter keys again.

Ratings, account sync, and smart enrichment for your library.

• MDBList — source-labelled ratings on the title page and public-list search in Discover. Free key: mdblist.com → Preferences → API.
• Trakt — syncs your watchlist and history both ways and adds Trending and Recommendations catalogs. Connect your account from this screen.
• TMDB — artwork and metadata enrichment.

Picking rules (how 4789 chooses the best source for quick play), the default player, autoplay of the next episode, and subtitle preferences — language, appearance, and timing offset.

Public lists become shelves. Paste a public Letterboxd profile or list, or search MDBList's public lists inside the app and tap add. No account is needed for public lists.

4789 TV is a separate receiver app for Android TV, Google TV, Fire TV, and Shield. Set up the iPhone app first, then follow the TV guide.

Export settings. Settings → Backup & Transfer → Export settings opens the share sheet. Save the file to Files, iCloud Drive, or any location you control. Saving to iCloud Drive keeps a copy available to your other devices; 4789 has no account and does not sync settings by itself.

Import settings. On a new phone or fresh install, Settings → Backup & Transfer → Import settings, then choose your saved 4789-settings file (or paste its text). Your catalogs, keys, and preferences return in one step.

Send settings to a TV. The same section can transfer your setup to a 4789 TV receiver on your network.

Protect the file. The export is plaintext and can contain live keys and private URLs — treat it like a password. It does not include downloads or watch history.

Library & Services — Jellyfin, cloud services, and calendar connections. Appearance — theme, app icon, and the Pitch Black canvas. Diagnostics — logs and debug switches; useful when asking for help.