This is the ad-free version. It includes: GUITAR NOTES SECTION on which you can click any string and fret on the virtual guitar fretboard to see the corresponding note on the staff, its name and its pitch. This section includes exercises on which notes appear on the staff and you have to click on the string and the fret corresponding to each particular note. Or in reverse: a string and fret are marked in red and you have to click the right note on the staff. This helps on being able to see a written note and relate it with the guitar fretboard or seeing an specific fretboard position and knowing which one is the corresponding note on the staff. There are exercises without time limit to click and there are exercises with time limit to increase the speed to respond. After working this exercises you will be able to see a note on the staff and locate it´s position on the fretboard and you will be able to see an specific fret and string and know which is the corresponding note on the staff. Playing guitar chords or guitar scales is easier if you know how to locate music notes from a guitar sheet music on the guitar fretboard. Guitar notes can be learned fast with this app. If you want to find out how to play guitar or if you want to use a guitar chords chart this app will be very helpful. There are several types of guitars: acoustic guitar or electric guitar, spanish guitar or classical guitar. There are different guitar brands: Fender, Gibson, Ibanez and many more. All of them have the same music notes and those music notes are written in the same way on a music sheet. So you can use this app for any type of guitar or any guitar brand. If you are taking guitar lessons and want to play guitar songs you should use this app. It is made for those who want to learn guitar.