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What is it?

"Who owes whom" is yet another internet tool that answers the said question in the context of a social group. It allows you and your friends to enter shared expenses in a spreadsheet and get all the debts induced by those expenses. Besides, you can track all your debts, register new ones and mark them as paid.


This service is created by one single person with no purpose of making money but only the hope to make a useful piece of software. Any feedback would be appreciated in order to improve the service: contact at whooweswhom.net.

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Version 3 release for roommates

Version 3 of kidanki has been released for roommates. I can finally enter the expenses I share with my roommates using my mobile! Some screenshots: Home screen of kidanki on a laptop Home screen of kidanki on a mobile Home screen of kidanki on a tablet

Version 3 release for anonymous usage

Kidanki exists in two versions: the "anonymous" version where one can create and share an expenses sheet without signing in; the "connected" version where one signs in and can manage several expenses sheets and several groups of people. Today, version 3 for anonymous has been released! It works on mobile, tablet and desktop screens, it's fast and it couldn't be any simpler. Here are some screenshots: Creating a new expenses sheet List of expenses on a mobile screen List of expenses on a tablet screen List of expenses on a desktop screen List of debts on a mobile screen Expenses sheet settings on a tablet screen

Starting who owes whom

A few months after having created a little tool to manage shared expenses, one of my roommates who just doesn't like computers, asked me if she could use the tool to settle accounts after holidays with some friends. I was delighted that she understood that the tool could be extended to that usage and thought that if she preferred to use such a tool rather than a piece of paper, others might also do. Finally, I have an opportunity to make something with my skills that is at least useful, even if it's unsignificant and absolutely not exciting. Geek section The first task was to choose the technology I will use to build who owes whom. I was sure to use GWT but didn't know for the server part. At that time, cloud computing and scalability were in the air. And that was also the time Google AppEngine appeared. I chose that technology rather than traditional JEE and Amazon cloud for one main reason : it is free. Plus it is Google and I like and Google ; plus it is based o...