My most-used app
I use Simplenote every day on an iPhone, an iPad, and Macs at home and work. I have used it since early days after buying my first iPod touch in 2007. The interface is brilliantly simple, finding the information Ive stored is easy, and the synchronization "just works" as expected. Simplenote is an invaluable aid to an aging brain!
Apples Notes app is also great, but older devices may not be able to play, and non-Apple devices cant. Simplenote wins if you need to work across platforms.
Brobdignagian about
Simplenote, v4.4.3