Doit.im

If you need a nice and easy to use task manager, check out doit.im. I use it on my ipad, my android phone (particularly like the quick add tool) and my PC (via Chrome). It has a ton of useful features. You need to spend half an hour understanding how it works. I like the nested tasks and many other things. It will allow you to quickly implement a GTD (getting things done) routine. I only wish the interface was a bit more colorful. I used various tools in the past (notably on the ipad) and finally chose this one particularly because of the cross-sync between devices which is awesome. In fact I use it as well to track bills and assets on the go. Not very expensive, a nice little tool. With a skinnable or sexier interface it would be 5 stars.