Excel add-in · Windows · Mac · Web
\nTell it.
Preview it.
Trust it.
\n Tellsheet puts a set of precise data power tools — and an optional plain-English command bar — right inside Excel. Every change is shown to you before it happens. Nothing is touched until you click Apply.
\nAnd your spreadsheet never leaves your computer.
\n \nPay once, use forever · 14-day money-back guarantee · No subscription
\nNothing changes until you click Apply.
\nThe command bar is optional — every tool also works as a point-and-click wizard.
\n01 — Privacy
\nYour spreadsheet never leaves your computer.
\nNo uploads. No cloud processing. No “we take security seriously” page hiding a data pipeline. Every Tellsheet tool runs locally, inside Excel, on your machine — the same place your file already lives.
\nAll tools run locally
\nSplit, clean, convert, merge — everything happens inside Excel’s own process. Works the same with the network cable unplugged.
\nAI is optional — and bring-your-own-key
\nThe command bar uses your own Anthropic API key, stored only on your device. Don’t want AI? Never turn it on. Every tool works without it.
\nOnly your words are sent. Never your cells.
\nWhen you type “split the name column,” that sentence is the only thing the AI sees. Your data stays in the sheet, on your disk.
\n02 — The tools
\nTwenty-one jobs Excel makes harder than they should be.
\nEvery tool opens a plain-language wizard — dropdowns, column pickers, and a live before/after preview. No formulas to write. No syntax to learn.
\nPro tools
\n Unlocked with your license\n{{ t.name }}
\n{{ t.desc }}
\nFree tools
\n Included free with every install\nEvery option-based tool ships with a clickable wizard and a live preview — see how it works in Excel.
\n03 — How it works
\nThree steps. The third one is a choice.
\nTell
\nType what you want in plain English — “split the name column into first and last” — or pick a tool from the ribbon and answer a few dropdowns. Whichever you’re comfortable with.
\nPreview
\nTellsheet shows you the exact result before anything happens — a live before/after of the affected cells. Wrong column? Odd edge case? You see it here, not after.
\nApply
\nClick Apply and the change lands in your sheet. Don’t like the preview? Cancel, and your data is exactly as you left it. Nothing ever changes without your say-so.
\n04 — Who it’s for
\nBuilt for the people who actually run the numbers.
\nAnalysts
\nYou get exports that arrive wide when you need them tall, dates stored as text, and names crammed into one column. Unpivot, convert, and split them in seconds — with a preview instead of a prayer.
\nAccountants
\nClient data is confidential — pasting it into an online cleaner isn’t an option. Tellsheet works entirely on your machine, so the ledger you clean is a ledger that never left your care.
\nOps people
\nEvery week: the same messy roster, the same lookup between two lists, the same trailing spaces. Tellsheet turns your recurring cleanup into a two-click routine you can trust on a deadline.
\nStop fighting formulas.
\nOne payment. Every tool, forever, on your computer. If it doesn’t earn its keep in two weeks, we’ll refund you — no questions asked.
\n