Music & Audio Tools
6 tools · 6 available now
Practice aids for musicians — metronome, BPM tapper, tuner, and note-frequency references built on the Web Audio API.
BPM Tapper
Tap along to detect a song's tempo.
Metronome
Keep time with an adjustable metronome.
Guitar Tuner
Tune your guitar using your microphone.
Piano Scale Reference
Explore piano scales visually and by ear.
Note Frequency Reference
Look up the frequency of any musical note.
Drum Practice Click
Practice with a customisable drum click track.
About music & audio tools
Musicians need responsive, low-latency tools, which makes the browser's Web Audio API a perfect fit. ToolJutsu's music tools include a precise metronome, a tap-tempo BPM detector, a microphone-based instrument tuner, a piano scale reference, a note-frequency chart, and a customisable practice click. They generate sound directly in your browser with no external services and no audio leaving your device.
Every tool in this category runs entirely on your device. Your files and inputs are never uploaded to a server — there is no server in the loop that touches your data. That makes ToolJutsu a genuinely private way to get everyday tasks done. New tools in this category go live as the project progresses; cards marked “Soon” are on the roadmap.