80 built-in functions
SUM, AVERAGE, IF, VLOOKUP, COUNTIF and the rest, with ranges, nesting and formula autocomplete as you type.
Spreadsheets
Spreadsheets backed by Markdown tables.
A real formula engine — 80 built-in functions, cross-sheet references and range maths — over tables that stay readable as text in the same workspace as your documents.
Formulas, not just formatting. Stored as Markdown tables.AI creates and editsLive collaborationInline commentsVersion historyFolders and namespaces
The numbers always end up somewhere else
Three ways data drifts away from the writing — and what keeps it close.
The model lives in a separate spreadsheet nobody links from the doc.
The sheet is a file in the same workspace, beside the document that cites it.
Exported CSVs go stale the moment the source changes.
Cross-sheet references recalculate; there is no export to go stale.
A binary spreadsheet gives you no useful diff in review.
Markdown tables diff line by line like any other text.
A spreadsheet that computes
Not a pretty table — an engine.
Cross-sheet references
Pull a value or a range from another sheet and let it recalculate. Assumptions in one place, results in another.
Rows, columns and export
Insert, delete, sort and resize, then export to PDF when the number needs to leave the building.
Keep the maths next to the argument
Your sheet is a Markdown table with a formula engine over it — reviewable in a pull request, readable in a text editor, yours on the way out.
80Built-in functions
CrossSheet references
diffReviewable as text
PDFExport when needed