好朋友好算账

There are several people who are on good terms with me and we often have meals and go out together. Today you paid 200 yuan for the meal for everyone, yesterday I paid 150 yuan for the train tickets for everyone, and the day before yesterday he paid 180 yuan for the snacks for everyone... Even brothers should settle accounts clearly. So who should pay back how much to whom now and what's the most convenient way to do it? Please use this app!! It will free you from the messy accounts that need to be calculated one by one!
Usage:
1. Add a new account book
2. Add some participants
3. Add each expense to the account book
4. Just click the calculation button!