Backsell
AI co-host for streamers
A DJ or radio host has roughly eight seconds to say something worth hearing about the track that just ended. Backsell writes those eight seconds — with a language model that ships inside the app and runs on your own Mac.
● On the App StoremacOSMusic1 language
What it does
The model is in the app
An open-weights model is bundled with the download and runs locally. There is no API key to buy and no request leaving your Mac.
Built for the gap between tracks
Lines are short, speakable and timed for the handover, not paragraphs you have to edit down while the record runs out.
Your library stays yours
Track information is read on the machine. No listening history, playlist or set is uploaded anywhere.
Questions
Do I need an OpenAI or Anthropic key?
No. The bundled model works with no key and no account. You may optionally point it at your own provider if you prefer.
How big is the download?
Large — the app ships a full language model. Budget a couple of gigabytes.
Which Macs does it run on?
Apple silicon Macs on macOS 14 or later.
Details
PlatformmacOS 14.0+
CategoryMusic
PriceFree, with in-app purchases
Languages1
Works offlineCompletely — no network needed
App Store ID6791441069
This app collects nothing. No account, no analytics, no advertising identifier.
