Better Notes - Simple notes app that ties notes together with #hashtags
Whimsical Sticky Notes - Visual project management using sticky notes
ClevNote - ClevNote is an amazing mobile application that helps you to write the daily memos on your smartphone.
Jot - The no-fuss way to take notes
Notepad by Splend Apps - Notepad by Splend Apps is one of the best mobile apps that enables you to create a to-do list and notes.
Gone - An ephemeral to-do list