Uberchord Guitar
Fretello
Justin Guitar
Guitar Pro 7
Fretuoso
Go PlayAlong Tab Player
Moosiko
Guitar Trainer
Crossword Jam
Logic Puzzles Daily
Crossword Puzzle Free
LetterPop
One Clue Crossword
Jumbline 2
Word Fit Fill-In Crosswords
Rusty Lake Hotel
Crossword JamI've been using Uberchord for a few years by now and it's just amazing. It's all about chords, rhythm and songs. This is no child's game, though, you actually learn how to play. The recognition works for most of my guitars and is borderline crazy, even showing me if I put a finger on the wrong fret. It won't let you just play anything and still pass. They have courses library (they call it learning path) and a pretty large catalog of popular songs. I wish they had solo training, but all in all, highly recommended.
Fretello - Duolingo for learning how to play guitar
Logic Puzzles Daily - Logic Puzzles Daily app comes up with features to help you in taking challenges so you can clear levels after levels of brain teasers.
Justin Guitar - Over 750 completely free guitar lessons!
Crossword Puzzle Free - Crossword Puzzle Free is an app by Redstone Games that provides you with a variety of different puzzles according to various difficulty levels such as easy, medium, hard, and pro, etc.
Guitar Pro 7 - Create, play and share your tabs
LetterPop - LetterPop is a service that allows you to easily create online newsletters with text and images and...