Get started in minutes
Download AddSub for macOS
Free 7-day trial of the full app. No payment needed to start, no account — just download, install, and watch anything with subtitles.
AddSub for macOS
Apple Silicon (M1 or newer) · macOS 26+ · ~39 MB app
No payment to start100% on-device99 languages
Install in 4 steps
1
Download
Grab the latest .dmg below (~39 MB, plus optional language models you choose).
2
Install
Open the .dmg and drag AddSub into Applications. On first launch, if the audio loopback driver isn't already installed, AddSub will ask for one admin password to install it.
3
Play anything
Start any video, stream, or call. AddSub taps the audio, transcribes and translates live, and floats subtitles above your screen.
4
Your 7-day trial
The full app runs free for 7 days from first launch. After that, activate a one-time license — no subscription.
System requirements
- Apple Silicon Mac (M1 or newer). AddSub uses the Neural Engine for fast, low-power transcription and translation.
- macOS 26 or later.
- Optional language models are downloaded on first use (tiny = 16 MB → large = ~3 GB). You pick what you need.
- Microphone permission (one-time) for the audio capture device. Used only locally.
Problems installing? Read the quick start guide or Contact.