Spark Grid

Spreadsheets that feel like Mac software.

Open Excel workbooks and CSV files natively — formulas, filters, formatting, and pictures — without dragging a browser into your dock.

macOS 14+ · Built by Sam Parker · Part of the Spark Suite

Built for real files

Designed around Excel interchange and everyday Mac spreadsheet work — not a toy grid.

Excel & CSV Open and save `.xlsx` with formulas, merges, filters, conditional formatting, charts, and images.
Native grid Sticky headers, freeze panes, fill handle, and keyboard navigation on a custom AppKit canvas.
Formulas that explain themselves Formula bar, autocomplete, and clear error banners when something goes wrong.

Switch tabs, keep freeze panes, and lean on conditional formatting when the scoreboard matters.

Part of the Spark Suite — small, sharp tools for the Mac.