Just spin the wheel to your key!

Theo makes it quick and easy to find chords that sound amazing together. Just spin the wheel to your desired key and you're set! Our window shows you all the notes and chords in that key and hides the rest. 

check it out!

useful for all skill levels

Theo is great for beginners that just want to know what chords to strum on their acoustic guitar, perfect for church bands where members are struggling to keep up or follow along, and so handy for studio pros to transpose songs on the fly. 



pick one up!

Every good carpenter needs a tape measure...

sure, why not?

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