Free tools for musicians
Practice, mix and check your gear — right in the browser. No sign-up, works offline.
Practice Tools
Note, interval and chord trainers, chord progressions, scales and modes, fretboard notes, metronome, tuner and a practice log.
Open →Mixing Calculators
BPM to ms, frequency to note, dBu/dBFS and decibel maths, sample rates, room modes and mic delay, a file analyser and a mixing glossary.
Open →Headphone Power Calculator
Pick your headphones and interface or headphone amp to see max SPL and the voltage and power you need.
Open →About
Simple, fast tools built by a working mix engineer. Everything runs on your device: nothing is uploaded, and each tool can be installed as an app and used offline.