Press the green flag twice (just in case) ;) Use the arrows to change the key of the chord you want to play! The left box contains the semitones, the middle box the chords and the right box the final output. You can change the key of any chord and then look for the chord you want. Example: If a song contains the chords C, G, Am and F, and you would like to transpose it 5 semitones higher, the chords would be F, C, Dm and A#. Easy!
I wanted to make this project so it's easier for me to transpose songs into my vocal tone, but I ended up making this project public. :3c I hope you like it! Leave a comment if you found it useful, I'd love to know!