Every visualization Instacalc draws — each from a one-line function call over plain data.

A tour of the input controls — plus the new **action buttons** that set values (even a field inside an object) in one tap. Change anything; the readouts update live, and the whole state stays in the URL — nothing is hidden, so it's all shareable and undoable.

A pattern for big data tables: load a shared base (a Google Sheet, a hosted JSON), then layer **your own** edits and rows on top — without ever touching the source. Add rows by tapping a button or editing the table. Everything stays in the URL, so your layer is shareable and undoable.

Track holdings like a spreadsheet: shares × price per row, weighted by position. Sort by value, edit a price, watch the allocation update.

The everyday Excel job: a list of line items with quantities and unit costs, totaled automatically. Edit a cell and the grand total below moves. Add a line with **+ Add row**. Sort by clicking a header.

A grid of player stats you can edit, sort, and total — like a spreadsheet, but every rollup below updates live and the whole thing is a shareable link. Click a column header to sort.