Daily check in with nightbot

Nightbot
1

Player A

Check in daily via chat room. replied the robot. Today is the first day of signing in, and A has signed in for the first consecutive day.

Day 2 Player A

Check in daily via chat room. The robot replied that today is the second day for A to sign in, and A has already signed in for the second consecutive day.

Day 36 Player A
Check in daily via chat room. The robot replied that today is the 36th day that A has signed in, and A has signed in for 36 consecutive days.

2

Anything with user tracking would require a custom program that records user frequently. It could however use the Nightbot API to make Nightbot send a message.