A native macOS menubar master MIDI clock + Ableton Link. Sync your hardware and software to one tight clock without opening a DAW. Free, native, open source.
Open the .dmg, drag Synclock to Applications, and launch it. It lives in the
menu bar and updates itself.
macOS 13 or later · Apple Silicon.
- Master MIDI clock (
0xF8@ 24 PPQN) + transport (Start / Stop / Continue) to any connected gear and a named virtual port. - Ableton Link — a single on/off toggle; when on, Synclock shares one tempo and downbeat with every Link app and device on the network, with a live peer count.
- Works with any gear: per-device enable, nickname, sync delay (ms), clock-vs-transport, live status. New devices default off for live safety.
- Decimal BPM (30–300) + fine nudge + tap tempo.
- A hand-owned, timestamped CoreMIDI scheduler — the clock is meant to feel tight.
For developers. Most people should just download the app. Requires Swift 5.9+ (macOS 13+).
swift build # builds the app + C-ABI Link bridge
swift run synclock # launch the menubar agent
swift run SynclockTests # dependency-free test runnerThe AbletonLinkBridge target vendors Ableton Link 4.0 under
ThirdParty/ableton-link and exposes it to Swift through a small C ABI (see
ThirdParty/README.md).
GPLv2-or-later (see LICENSE) — required because Synclock links the
Ableton Link C++ source. The Synclock name, logo, and brand assets are reserved
Caiano brand assets, not covered by the GPL.
Free, with an optional Buy Me a Coffee.
Copyright © 2026 Henrique Caiano.