Instant A/B switching
Flip between two loaded tracks without changing context or losing your place.
Native macOS audio utility
AB Tester
Compare two audio files quickly with synced waveforms, one-click A/B switching, loop regions, and a focused transport built for listening decisions.
MIT licensed
Waveform A/B
Two tracks, one decision surface.
Drop in Track A and Track B, toggle between them, mark the section that matters, and keep your ears on the comparison instead of the interface.
Why it exists
Small tool, fast comparisons.
Waveform-first layout
Large waveform decks keep timing, transitions, and edits easy to scan.
Loop the moment
Drag a region, enable loop, and focus on the exact passage you are judging.
Native and open
Built with SwiftUI for macOS and released under the MIT license.
Install
Grab the DMG from GitHub Releases.
The release build produces a signed app bundle and a styled DMG with the same surfing waveform visual system as the app.