I have been messing around with Slimming World for the last year and a bit, lost over a stone on it but it was not working for me. I love the plan and how easy it is to follow - however it does mean you have to be organised to plan and prepare everything.
I did WW in the past but never got into the right frame of mind over it, but am aware of the concept of it etc.
From what I have read on here if I buy the app "Value Diary" this will do everything the WW online diary does. I assume this means that it will have all the points values etc in it. Does it calculate how many points you can have a day and track them?