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From GF-Ray Design Center:
I want to manage To Do List very simple.But my To Do list is not flat.It is like a folder hierarchy.To complete the one to do that, I have to do some achieve.For example.Shopping Light bulb Books iPhone SDK Car Magazine CD Artist A Album Artist B Album+DVD Food carrot cabbage pimiento onionJob mail AAA BBB CCC Phone DDD EEE I could not find a simple free application that can manage these.So I developed ToDo4ToDo.For people who have same problem , I register ToDo4ToDo in App Store.For free edition , I Implement iAd.If you want to manage a lot of items or if you want to erase iAd,I offer a paid version.If you want to manage hierarchical lists like the folder,please use this App.Please forgive my strange English.