Tone Tracker

Steel strings do not last. Tone Tracker tells you when you need new strings.

By specifying the type of guitar, how often it is played, whether or not the strings are coated and the age of the strings the app will work out the condition of your strings.
The progress indicator which surrounds the image of each guitar tells you how long until you need a restring. It's even color coordinated.
Green = good
Yellow = dull
Red = rusty
Tone Tracker will send you a notification when you need a restring.

Tone Tracker works great for electric, acoustic and bass guitars.

This app uses icons designed by the following authors from Flaticon:
Freepik
Roundicons
Mynamepong
Dale Humphries
Smashicons