About

These four apps are made by one person. Each one does a single job for someone with an instrument in their hands: look up a chord, tune up, keep time, or find out what you just played.

They run on your device. There is no account to make, nothing to sign in to, and audio is analysed locally rather than sent anywhere. Each app is free to try and unlocks in full with a single one-off purchase.

Questions, bugs and requests all go to chordology@pm.me.