I used http://tricount.com/ http://tricount.com/ It can be web only or a mobile app. I remember looking for the word "iou", meaning "I owe you" and found some

I used http://tricount.com/ http://tricount.com/ It can be web only or a mobile app. I remember looking for the word "iou", meaning "I owe you" and found some apps regarding splitting the bills, but I ended up with Tricount.