Personal Android app · Sideloaded
A private cinema for the movies and TV you already own.
Browse, search, and watch your own library in a dark, fast interface that runs entirely on your phone. No accounts, no cloud, no tracking. Just your collection.
Android 8.0+ (minSdk 26) · arm64 · ~122 MB · installs directly from GitHub Releases. Not on the Play Store.
WHY
A film I'd already paid for was marked "Leaving Soon." That's streaming: you rent access, and it disappears on someone else's schedule.
Mofy keeps what you care about on your own device, in a player you control. Buy it if you have to, then keep it with you.
What it does
Mofy is a single-user media app, made for exactly one person: you. There is no sign-up, no shared account, and no recommendation engine trying to sell you something. Just your library, your progress, and the things you actually want to watch.
Home
Home keeps Continue Watching, Recently Added, All Time Classics, and New Releases on one screen. The first two are drawn from your own library, the classics from a curated shelf that comes with the app. Watch progress is tracked as you go, so whatever you were part-way through is always one tap away.
Discover
Type something like “dark psychological thriller” and Mofy searches by meaning instead of exact names. The embedding model and vector index run on your phone, so nothing you search for leaves the device. A small language model also reads genre, mood, date, and rating from what you type.
Details
Poster, synopsis, genres, year, and type sit above a clear Play button, with source linking and a shortcut into Watch Together. Rate what you have seen with a quick thumbs up or down, and Mofy remembers it.
Sources
Mofy plays what you point it at. Pick a single video file, choose a whole folder, or link a title from YouTube. YouTube videos are resolved on the device and play inside Mofy itself. No browser window, no WebView. libVLC handles the formats, torrent links included, and Mofy never downloads anything on its own.
Library
Import files from your device or look titles up on TMDB, then sort and filter the whole catalog by genre, type, or date. Everything is stored locally, on storage you control.
Adding a title from a local file
From your library, tap Import to add a new title.
Pick one video file, or a whole folder, then say which file is the movie and which are the subtitles.
Search, confirm the title, and save. It becomes a new entry in your library.
Importing adds a new entry to your library. Linking (the flow in the Sources section) attaches a playable source to a title that is already in it.
Curated
Mofy arrives with a curated collection of vintage and classic films: rows like Vintage Picks and All Time Classics that are chosen by hand, not generated from whatever happens to be sitting on your phone. They live alongside your own imports, so there is always something to watch before you add a single file.
Watch Together
Start a room, share the code or scan the QR, and playback stays in sync over a WebRTC data channel. There is no central server in the middle. The room is just the two of you.
Settings
The on-device models behind semantic search and facet detection are managed from Settings, where you can download or re-download them whenever you like. Mofy also takes your own free TMDB API key (the button opens TMDB in-app so you can get one), and falls back to the shared default key if you would rather not use your own.
Under the hood
The interesting parts are local: models, index, and player all live on the device. Nothing is sent off to be processed somewhere else.
EmbeddingGemma-300m embeddings paired with a sqlite-vec KNN index let you search the catalog by meaning, entirely on-device.
A distilbert ONNX model pulls genre, mood, date, and rating out of plain language, so filters follow what you described.
libVLC handles the formats. Sources include local files and folders, YouTube videos resolved and played in-app with no WebView, and torrent links.
Synced playback carried over a WebRTC data channel between the people in the room. No central relay server.
New-release lists are synced from TMDB: upcoming, now playing, and on the air, ready on the Home screen.
Everything runs on-device. There are no API-based LLM calls anywhere in the app, and no account to sign in to.
Get Mofy
Download the APK, install it straight on your Android phone, and start watching: your own library, a curated classic, or a title linked from YouTube. It is a direct download: no store, no account, no waiting.
Mofy is a personal project, not a Play Store app. You install it yourself.
MOFY