TaskPaper - Plain text to-do lists for Mac
BodBot - Free personalized training and nutrition plans to help you accomplish any fitness, athletic or health goal.
Todoist - Todoist is a to-do list that helps you get organized, at work and in life.
System2 - Video-powered 1-on-1 fitness coaching by elite trainers 💪
Microsoft To-Do - Task management tool
NutritioApp - Simplest way for nutritionists to handle far more clients