Music on Vine - Vine, now with music. Make 6-second music videos.
Productivity Planner - This package contains a selection of 10 templates that have helped me increase my productivity over the past 5 years.
Mindie - 10 second music videos (w/ private mindies)
QuietKit - Guided meditation for beginners (for free)
Triller - Make celebrity-quality videos with a few taps of your phone
Streaks - The to-do list that helps you form good habits.