Some things don't need to be too complicated.
SmallTask is the most simple but yet fully working to-do list application available.
SmallTask is designed to be used on the go when every second is precious.
You can create new tasks in just a couple of taps.
It is extremely handy to be able to manage tasks in the notification center via widgets both in iOS and OS X.
Notification actions allow you to postpone tasks with just a single tap without opening the app.
You can use the app on any number of devices.
iCloud is used to keep your tasks in sync. It is very fast and reliable.