This morning while looking at the market, I suddenly thought of an idea.

What if we create an app called "Worker's Club"? The model is as follows: users earn points through virtual check-ins. Registering with an email gives you 100 points instantly, and you earn 1 point for daily check-ins. On public holidays, no check-in is required, and users are rewarded with 3 points instead.

There is also a negative incentive design—if users don't check in, the system sends an email reminder every 15 minutes, up to 4 times a day, with each reminder deducting 1 point. This approach can re-engage lost users and increase user activity through a point deduction mechanism.

The overall logic is essentially: using a points system to influence users' check-in habits, combining positive incentives (earning points for check-ins) and negative incentives (deducting points for missed check-ins and email reminders) to form a self-consistent retention loop. It's a good idea, but whether it can truly retain users depends on how the community atmosphere is built.