A spreadsheet that opens in a tab and shares with a link.
No account, no install, no licence. Open it, type in it, send the link. The formulas behave the way the ones in Google Sheets behave, because that is the whole point of the engine underneath.
Free and anonymous. A shared link lives for up to 90 days and needs no sign-in at either end.
Edit any cell — it recalculates here, live
Sharing
Send it. Nobody signs in.
A link anyone can open, that expires on a schedule you pick, with the workbook data deleted when it does.
Worked examples
Two things you can do right now.
Split a bill that did not split evenly
Four people, but only three drank the wine and two had dessert. This is the arithmetic everyone does badly in their head at the end of a meal.
Open the demo →A budget you can send to someone else
Track what you planned against what you spent, then share the whole thing as a link. Nobody signs in, and nothing is stored against your name.
Open the demo →Not quite your problem?
The same engine sits under all of these. The difference is only which surface you reach for.