Every Day Calendar inspired by Simone Giertz's project: https://www.kickstarter.com/projects/simonegiertz/the-every-day-calendar
It stores clicked days in localStorage.
It looks like this:
You can use it as a mobile app by visiting https://kissgyorgy.me/every-day-calendar/ and using the "Add to Home Screen" button.
You can add it multiple times with different names and they will have different
localStorage objects, so you can use it to track different things:
