Use APKPure App
Get Guitar Tools old version APK for Android
Guitar tuner and chords library
TUNER:
Use one of the 30+ built-in alternate guitar tunings (Open, Dropped, Double Dropped, Minors, Fourths...) or create your own custom tuning.
Adjustable reference note frequency (A440).
Automatic detection of tuned strings.
Click on the note name to hear the actual string sound. This way you can tune your guitar by ear, switch back to automatic mode and than check how good your ears are.
CHORDS:
Chords library with more than 2500 chords including e.g. 9th, 11th, 6th, m(add9), m7(#5)...
You can hear the sound of each chord.
Chords are not artificially generated, all fingerings are real, usable.
Shows chord tones on each string, finger positions, inversions.
GENERAL:
Various note naming schemes: English (CDEFGAB), German (CDEFGAH), Latin (DoReMiFa...)