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.

All Note Pro - All Note Pro app contains features to enable users to write their new ideas and important details on their mobile phone to share them with the outside world.

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.

Orgzly - Outliner for notes, tasks and to-dos

Obsidian Flight School - 🚀Obsidian Flight School is an educational product—and starter kit.

Volume Control Panel Pro - Volume Control Panel Pro is an efficient mobile app that enables its users to control the volume of the system conveniently.