I've tried almost every digital wall calendar available (as is my job as WIRED's resident calendar tester), and the model that I've found increasingly impressive as time goes on is the Greenlight Hub.
Greenlight has a different premise than other digital wall calendars. The brand started as a debit card for kids before branching into more app-based categories: chores to attach to allowance distribution, family location tracking, and more. Greenlight launched its own Family Hub device to bring these features together and add a few more, like the digital calendar function, seen in popular tools like Skylight.
