Useful app that has been abandoned – GuitarToolkit - tuner, metronome, chords & scales Review

This app is the most useful guitar app for my songwriting and composition but unfortunately it hasn't been updated in a long long time, not much has changed in the years I've had it and I'm afraid I will eventually loose the projects I've made in this program. Wish the creators would invest in it and continue to develop it.
Review by greysign on GuitarToolkit - tuner, metronome, chords & scales.