If you’re learning to play the guitar, then you will constantly be looking up two things: Scales and chords. After you get a bit further into it, you’ll add arpeggios to that list. And you will keep referencing them for years, becasue there are a zillion way to play each chord, scale, or arpeggio on the guitar. And here’s the problem. Reference materials for these three essentials are a pain to use. Either you spend more time clicking around an app than you do practicing, or you have to keep a ton of PDFs around, and try to keep those organized. Now, though, a super simple (maybe too-simple) app finally ge ts it right. It’s called Fretbud, and I love it.