Over many years I have tried out many To-Do programs and apps but finally found Toodledo which I have been using for about 2 years. With the ability to synchronize IPhone and iPad with the Toodledo website means everything is always available. I live a complicated life but dividing everything I do into 4 contexts - Me, Family and Friends, Making a Living, and Keep Life Organized - nothing gets left out. Its one of my my most important apps.
Rick E Dick about Toodledo, v3.1.1