Jean Riviere
Jean Riviere reviewedThe Everyday Calendar by Simone GiertzMotivate yourself to do a daily task with gold stars
 NeutralPros: 

It is a physical product and it is gonna be at your place of choice at all times

Cons: 

Quite expensive. There are free app equivalents in the market. Limited interface, just works for a single habit. Monocolor, not expandable.

The functionality can be easily copied in a digital format. There are more robust solutions in digital format present in the market : apps in the apple (Strike is an example) and android stores (habitbull for example).

Jean Riviere has never used this product.