Best overall scale app I've found – Star Scales Pro For Guitar Review

Very nice update to an app I've used for quite a while now. Has a great variety of scales to learn and has plenty of practice tools. Allows you to save favorites you'd like to work on and several options for viewing the notes within each scale. Nice playback controls for hearing each scale. The new graphics work really well. I like this app a lot and it's the one I go to for all of my practice.
Review by TaylorPlayer on Star Scales Pro For Guitar.