Exstora - Built-in quick note: save ideas, contacts, interesting facts
Daily Minded - The easy way to maintain a journal, diary or captain's log.
footnote - A beautiful, fast, and simple note taking app in the style of elementary
Mini Diary - Simple and secure journal app
The Most Dangerous Writing App - If you stop typing, all progress is lost.
Grid Diary - The simplest way to get started with keeping a diary