I present you a useful tool for beginner guitar players. It helps you to learn using a capo and to transpose guitar chords.
It has two modules: Capo Calculator and Transposer, just swipe left or right to switch from one to other.

Capo Calculator:
Enter the guitar chords separated with spaces and adjust the capo bar, you will able to see which chords you should play relative to capo at the chosen position. If you are beginner guitar player and you have some trouble with playing barre chords just enter the chords which are giving you a hard time and tap at the Best Fit button, the app will try to show you a position for the capo at which you can play easier chord shapes instead of the original harder guitar chord shapes.

Transposer:
Enter the guitar chords separated with spaces and move the transposing bar left or right to transpose your chords down or up.