Indexcard: a notebook for your numbers

A few rows of sales. A budget. An idea you want to explain. Indexcard puts the numbers and what you make of them in one shared document: paste a table, ask a question in plain words, and put the answer in a sentence that stays right when the data changes.

• Ask in plain words. “Which products lose money?” comes back as a chart, with the calculation shown.
• Numbers that stay true. A figure written into a sentence is worked out again when the data behind it changes.
• Bring data in from anywhere. Paste a table, upload a CSV or Excel file, link a Google Sheet, or photograph a receipt.
• Share one link. Readers see the writing and the charts; the rows behind them stay private if you want them to.

Free to start. No spreadsheet formulas to write.

Guides: turn a photo into a table, share a chart without the spreadsheet, link a Google Sheet, ask questions of your data, numbers that update themselves.