How to easily split expenses between a group of friends

I’ve been using Splitwise to split up bills and expenses within my group of friends. I found it very useful when you have more than 4 people in your group. And it’s FREE!

It’s also available for mobile apps, too. So you can easily split the bill on the spot.

It has an option to simplify your debts calculation. For example, if you owe person A $10 and person A owes person B $10, then a group with simplified debts (turned ON) will tell you to pay person B $10 directly.