Create a built-in habit share tracker so the community can participate in habit challenges together

A big part of making changes is building habits and it people could check off their daily activity in a built-in habit tracker that shows the whole community's status, it would give people more motivation and accountability to follow through. I'd love to have something like this built in: https://habitshareapp.com/ so that it can feel more like a group activity. This site does something similar with their show-ups for the day, and if the group as a whole has a certain attendance over the month, everyone wins something: https://mommastrong.com/ (it's under my showups but you can't see the calendar where you check off each day unless you're logged in.)