Milanote - Milanote is a note taking app for creative work.
Buno - Simple Note Taking - Simple, minimal & easy note-taking
Unleash Business Creativity in Notion - Any idea can be a valuable one, if systematically developed.
Chars - Unicode Symbols Keyboard for iOS
Four note boards - A simply stupid text tool to help think multidimensionally
A5 - Takes notes in your browser. Elegant & simple.