TeuxDeux – Free for TeuxDeux users ($24/year subscription – around £16)
"The name of this app is an complication of a simple pair of words, however the app really does just simplify things. A brilliantly well-organised, neat list of your things to-do, it allows you organize your week in easily readable format, designed to be as easy to use as a piece of paper. It tops the plain notepad and pen by being more mobile, accessible and just plain neater and tidier.
This is a helpful and erganomically designed tool, but just a bit more expensive. The app developers certainly spent a lot of time getting this minimalist planner as perfect as possible, but the cost might overprice the beauty for some."