Continuo is an activity-tracking app for iPhone. Unlike most activity trackers, it doesn't require the user to enter detailed information, like miles run or calories consumed. It simply asks for you to enter how you feel each day went.

This approach seemed to resonate, sending a positive discussion of Continuo to the front page of Hacker News, and earning it a feature on Product Hunt, as well as a mention from Khoi Vinh.

It's available on the App Store, and you can see its promotional site here.

These are some images from its onboarding process: