iPhone · iPad · Mac · Apple Watch
SUS4 Pitch Pipe
Twelve clean reference tones, one tap each.
SUS4 Pitch Pipe gives you twelve clean reference tones (one per chromatic pitch) across iPhone, iPad, Mac and Apple Watch. Tap a note and a pure sustained tone plays. Use it to tune by ear, warm up a choir, or check whether a room drone is affecting your pitch perception during a session.
The tones are generated cleanly without artefacts, so you are hearing the actual pitch rather than a compressed or distorted reference. The Watch tap interaction means you can sound a reference tone without touching your phone, useful if you are mid-performance and need a quick check.
Pitch pipes are one of those tools that are simple because they have to be. SUS4 Pitch Pipe keeps that simplicity and adds the reliability of a modern device so you are not carrying around an old physical pipe that leaks.
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