The only lyric-to-subtitle app that runs entirely on your Mac
LyricSync
You already have the lyrics. It adds the timing.
Last updated: 2026-07-20
LyricSync does not collect, transmit, or share any personal data. There is no account, no analytics, and no tracking.
What stays on your device
Your audio files, lyrics, timelines, and projects are stored only on your Mac. They are never uploaded anywhere. Speech recognition and alignment run entirely on-device.
Network use
The app connects to the internet for exactly one purpose: to download the speech-recognition model (about 480 MB) the first time you use auto-align. This model is a data file, not executable code. After it downloads once, the app works fully offline. No usage data, audio, or lyrics are ever sent.
Data collection
None. LyricSync collects no data of any kind, as declared in its App Store privacy report (“Data Not Collected”).
Contact
Questions: team@ksystudio.com