A while back I was watching an instructional video about using modes to spruce up my playing. The person in the video did a lot of talking about the theory behind different modes, but I found it difficult to visualize where those notes actually fall on the fretboard. Pictures of scales laid out on a fretboard are helpful, but they aren't very dynamic if I want to change instruments or keys. Thus, the idea of this fretted instrument scale wizard was born.
Let's say you want to play your guitar along with a song that is in G♭ minor. What notes can you play while staying in key? This wizard has you covered. It also has you covered if you want to play your mandolin using the Phrygian Dominant scale, or pretty much any other fretted semitone instrument in almost any key and mode you would want. There are presets for lots of common instruments and tunings, but if you need something special setting the instrument type to "custom" even allows you to handle really weird instruments of up to 10 strings tuned any way you want.
So go to town and have some fun. And hopefully now you and I can finally play in tune.