Concepts - Concepts is a digital design sketchbook for iPhone, iPad, iPad Pro and windows 10 devices.
Journal - Organize all your ideas
Ponder Pad - An easy, encrypted way to store & organise your thoughts.
Day One - A simple journal application for the Mac, iPhone, and iPad. AboutTo learn more about Day One, see these two excellent reviews . PublishPublish is not available in Day One 2.
Collect by WeTransfer - Collect by WeTransfer is the best way to organize your ideas.
Journalistic - A simple, yet powerful micro journaling app