Train Fitness - Automatically track your workout at the gym - hands free!

Todoist - Todoist is a to-do list that helps you get organized, at work and in life.

MoovBuddy - An exercise app for back & neck pain and joint health

Laverna - Laverna is a JavaScript note taking application with Markdown editor and encryption support.

Dualnback.works - Dual N-back is a specific brain training exercise, that's been shown by research - it might improve fluid intelligence.

doo - A smart, simple app for reminders and to-dos