just released version 1.0.5 of Tone Hole. What’s new:

Fixed a bug: Now if you purchase all the levels in major keys, the game remembers! (Seems fair enough.)

Also, I added a set of three new advanced levels (109-111) that focus on ti and tones from and to ti. It sounds a teensy bit locrian, but I concocted them so that your ear is consistently grounded in do to hear it within a solid (major key) tonal context.

Check it