Cashkey.  

I made a new single-page app for fun. Cashkey is an easy way to visualize and share how money comes and where it goes. I made it because:

• Money is like water: it flows in and out of our lives. Many people don’t know how, though.
• Sankey diagrams are great for visualizing things that flow, but they’re not natively available in spreadsheets.
• Sankey-making apps like the awesome Sankeymatic still require math that’s easy to botch.

Cashkey doesn’t save any data on the server–there is no database involved. Try it and let me know what you think.