I'm not too knowledgable about things like this yet, but I'll tell you what I know and then someone else can add to it later.
Creatine shouldn't be taken whilst cutting, simply because it has no use to you during this stage. What it does is make your muscles retain more water and so increase in size (meaning you need to drink a lot more to keep yourself hydrated). It also allows you to push a few more reps past what you could normally do whilst lifting weights, which I think is to do with some sort of energy boost that it gives you.
So in summary, Creatine is more geared towards bulking than cutting, but also doesn't work for everyone.