i just tried the free trial and I quire liked it, bit I can play equally as well with out - it just means you dont have to constantly calculate everyones M-zone and its always handy to have the pot
odds and outs infront of you. But I dont think anyone should depend on these peices of software as learning the maths is so important. The thing I found most helpful was the EV hand rating that connstantly changed, I am still coming to grips with EV so it was useful, but that is something you can't take on board without the software.
I dont think I would buy this but I might get it for free by depositing at one of the affiliate sites when my rakeback clears.
I personally don't think software like this is a bad thing, it's all calculations that can be made anyway so I feel it is more of a time saving device than a tool