
Count in
Active Participation
Used when enthusiastically joining an activity or group.
They're playing soccer on Saturday? Count me in!
Confusing with 'count on'
'Count in' means to include, while 'count on' means to rely on someone.
I'll count you in for dinner, but I'm counting on you to bring dessert.
Voluntary Inclusion
Implies a positive response to an invitation without being forced.
There's a team project? Great, count me in!