I have tried it and have 4 Apps to 1 year old use the free version I etschieden work for this good app to honor me and the Pro version fetched via the Amazon App Store because I have no credit card.
The widgets for ToDo and shopping on your homescreen it is well worth it.
Only the cumbersome change of the lists unterinander I do not like so much, if it were there would be more intuitive 5 of 5 stars.