AA sub-account app for iPhone and iPad

The bill is too clear, rejected by friends
The bill is unclear, the wallet is crying
It’s a hurdle to pay for food with a meal, but it’s a hurdle to ask for money with friends.
If you count thousands of dollars, still cant figure out how to share this meal?
At this point, you must rely on us
AA sub-account is suitable for the management and settlement of friends, roommates or any other debts, getting rid of debts, spending more time on important things, not arguing who owes, who is owed, how much