ChromoTune

ChromoTune is a chromatic tuner for every instrument — guitar, bass, violin, cello, ukulele, brass, woodwinds, and voice.

A swordfish hangs steady while the dial drifts behind it, showing how sharp or flat you are at a glance. Land in tune and it settles.

• Chromatic — tunes any note, any instrument • Fast, accurate pitch detection • Adjustable reference pitch, A from 415 to 466 Hz • Two themes: Tuna and Aquarium • Calm and uncluttered — no accounts, no distractions • Free

Allow the microphone, play a note, and tune.