I like it, but....

Could easily be a five star app, but It really REALLY needs an update. The playlist editor and library management is rubbish. The fx is wonky and sometimes unpredictable. The ability to beatmap from a certain point on, in addition to more flexible grid positioning would really really help as I have encountered tracks i just could not get to match correctly. Being able to access effects samples from main window seems logical, but sadly you cant. The quick hp/lp filter slider needs to be bigger. You can record mixes, great, but once you rename or convert, they are nowhere to be found. The record function may work on iPhone, but does work on iPad3 with current OS.
Despite these issues, i use it. A LOT. Please please PLEASE update, though. This could really be a legitimate DJing app but sadly falls short. I feel a bit ripped off for purchasing all premium features.

earh0x about Touch DJ™ Evolution - Visual Mixing, Key Lock, AutoSync