Surely

Most todo apps give you lots of features to organize your todos. But you don't want to be spending time organizing your todos: you want to be completing them.
Surely is a focused todo app giving you just the features you need to get your todos done. There are only three things you can do with a todo:
* Complete it
* Delete it
* Defer it
Here are all the features Surely doesn't have because they encourage you to keep more todos instead of completing them:
* Separate defer dates and due dates
* Complex ways of searching for todos
* Separate lists of todos so you aren't looking at all of them at once
* Bulk defer features. It should not be painless to defer many todos to the future; it should be painful to work with multiple todos so that you complete or delete them
Surely is available for free on both iOS and the web.