One library, no duplicates.
Titles are matched across servers by their TMDB and IMDb IDs, so a film on two servers is one entry. Pause on one server and finish on another — Aether keeps the furthest point.
All your servers.One library.
Plex, Jellyfin, Emby, your NAS and the files already on your device — on iPhone, iPad, Mac, Apple TV and Vision Pro.
Free. One download covers every Apple device. Version 2026.10.1.
Plays the file as it is.
PrismCore, Aether's own engine, repacks MKV and MPEG-TS into what Apple's player accepts. Nothing is re-encoded, so hardware decode, Dolby Atmos and Dolby Vision stay intact.
Your library stays yours.
No Aether account, and your media never passes through us. Aether sends usage statistics to TelemetryDeck by default — never titles, files or server details — and you can switch them off in Settings.
Works offline.
Download whole seasons, MKV and AVI included. Watch on the plane and sync progress when you land.
Every Apple screen.
One download covers iPhone, iPad, Mac, Apple TV and Vision Pro. Native on each: the Siri Remote on the television, keyboard shortcuts on the Mac.
Made by one person.
Designed and built in Prague. Every bug report is read by the person who will fix it, usually the same day.
Two more pieces, both open to look at.
Aether is the player. One of these is the engine inside it, the other is a server you can run yourself — and neither is required to use the app.
The engine · open source
PrismCore
Aether’s playback engine. It repacks MKV and MPEG-TS into what Apple’s player accepts without re-encoding a frame, so hardware decode, Dolby Atmos and Dolby Vision survive the trip. LGPL, on GitHub, version 3.5.4 — and usable in your own app.
How PrismCore works
Your own server · for Mac
Nexus
A media server that lives in your Mac’s menu bar, reads the folders your films and shows are already in, and sends the original files to every screen in the house. It converts nothing — Aether does that part on the device — which is why a Mac mini is a big enough server.
See NexusOn every screen you own.
The same library, native on each one — not one app stretched to fit five.
