Automatic
Recognises the nearest chromatic note and highlights the closest open string in the chosen tuning.
Tuner
Tune the instrument you are about to practise.
The tuner and fretboard exercises share the same instrument and tuning profile. Play a string to see its note, frequency and cent offset, or lock the target manually.
✓Guitar, ukulele and bass✓18 tuning presets✓Automatic and manual modes
Automatic mode · 440 Hz
E · In tune
- 182.41 Hz✓
- 20 cents✓
- 3Nearest string: E✓
- 4Reference tone available✓
App feature visualisation.
Two modes
Tune your way.
Automatic mode listens as you play. Manual mode locks onto one string. Both show whether to tune up or down.
Manual
Locks detection to one string, making noisy rooms and larger tuning changes easier to handle.
Reference sound
Tap a string to hear the target pitch before or while tuning.
18 presets
Change the tuning, not the mental arithmetic.
Your selection carries into exercises that display the fretboard.
Guitar · 8
Standard, Drop D, half-step and whole-step down, Open D, Open G, DADGAD and Drop C.
Ukulele · 5
Standard, Low G, D tuning, Slack Key and baritone.
Bass · 5
Standard, Drop D, half-step down, 5-string standard and tenor.
Private by design
Pitch detection happens on your phone.
Short PCM frames are processed in memory. Fretuno calculates pitch and tuning offset, then discards the raw samples without saving or uploading a recording.
Permission on demand
Android asks only when you open a microphone feature.
Noise calibration
A short calibration estimates the background level.
Clear result
See note, octave, frequency and cents - not an audio file.
Fretuno for Android
Tune once, then practise on the same fretboard map.
Fretuno is being prepared for release. The Google Play link will appear here when the store listing is live.