Question: to do list app on iphone?
Answer: OmniFocus. Best iPhone to do list app for power users who work alone. ... 
Any.do. Best iPhone to do list app for cross-platform users looking for an all-in-one organizer. ... 
Things 3. ... 
Todoist. ... 
Due. ... 
Fantastical 2. ... 
Microsoft To Do. ... 
Habitica.