Tuner & Metronome: Attune

Attune is a professional-grade chromatic tuner, metronome, and tone generator — everything you need to tune and practice, in one app. GPU-Accelerated Precision Attune uses advanced pitch detection accelerated by your device's GPU, delivering fast and accurate tuning in real time. Strobe Tuner Visualization See exactly how sharp or flat you are with a stunning strobe display — bands stay still when you're in tune, scroll right when sharp, and left when flat. Color-coded feedback (green, yellow, red) makes tuning intuitive at a glance. Tune Any Instrument - Guitar — Standard, Drop D, Open G, Open D, DADGAD - Bass — Standard, Drop D, 5-String - Ukulele — Standard, Low G - Violin, Viola, Cello — Standard tunings - Chromatic mode for any instrument Built-In Metronome Stay on beat with a full-featured metronome: 20–300 BPM, tap tempo, 6 time signatures (4/4, 3/4, 2/4, 6/8, 5/4, 7/8), visual beat indicators, and 5 click sounds including wood block, hi-hat, rimshot, and cowbell. Reference Tone Generator Play any note as a pure sine wave to tune by ear. Great for instruments without a pickup or in noisy environments. Calibrate Your Pitch Adjust the A4 reference from 415 Hz (Baroque) to 465 Hz in 0.5 Hz increments. Perfect for orchestras, ensembles, and historical performance. Haptic Feedback Feel a subtle tap when you hit the right pitch — no need to stare at the screen. Designed for Musicians - Dark theme optimized for stage and practice - Note display in letters (C, D, E) or solfège (Do, Re, Mi)