Is when need and design meet in the simplest form... This is a great example.
I match by ear, (and now by eye with touch dj) but this is a handy little app.
What I'd like-- to see you charge a buck.. It's worth it especially if you add:
A slider, to slide between both sides. A lot of stuff mixes pitch wise better if you change the pitch on both decks to meet in the middle.. A slider would be handy for this tweeking process. I know it's simple math, but so are percentages..
Manual bpm entry -- it's hard to get past the decimal point accurately/(consistantly)with tapping.
Thanks for the freebie!