For guitar players with an iPhone: this app is great for chord editing, song learning
This is useful for those who compose or those who are trying to transpose a song. But it can also work when you are learning a new piece — TabBank can import chords directly from the web!
But it's not all just text and weird letters. If you tap on a chord, you will hear it be played out and a small fretboard icon will appear, showing you exactly how said chord is played. So, beginners are welcome. For those of you that are a bit more advanced — you can actually edit chord inversions when in edit mode to make that D/F# sound just the way you want it to.
Lastly, TabBank will also let you punch in tabs. The aforementioned keyboard interface switches to one that allows you to quickly start 6 new rows with dashes (the tab symbol for “strings”). Due to the nature of the editor, trying to tab out a full song is a bit unrealistic (doable, but will take a while). It's better used for short intro solos or bridge licks and the like.
Download: TabBank for iOS
Things that are NOT allowed: