Evernote - Bring your life's work together in one digital workspace. Evernote is the place to collect inspirational ideas, write meaningful words, and move your important projects forward.
Everyday - Take a photo of yourself everyday.
Standard Notes - A safe place for your notes, thoughts, and life's work
Habit List - Create good habits and break bad ones with the app that keeps you focused.
Joplin - Joplin is a free, open source note taking and to-do application, which can handle a large number of notes organised into notebooks. The notes are searchable, tagged and modified either from the applications directly or from your own text editor.
Habitify - The easiest way to keep track of your habits