
AxonSheet is an Excel add-in for doing AI work across lots of cells at once, in the sheet you already have open. Paste in a Word or Markdown dump and it becomes rows. Select empty cells and it fills them using the data around them. You can add a column by describing it in a sentence, add rows that match the table, rewrite cells, or have it look things up on the web and put the results in the grid. If something looks inconsistent, it leaves a comment on the cell. Everything happens inside Excel. It's $49 once for lifetime access, but you plug in your own OpenAI, Gemini, OpenRouter or Ollama key and pay that provider for usage. That's good for privacy and a small hassle to set up. It doesn't work in Google Sheets. And it won't tell you what your numbers mean unless you ask it to.
We already list two spreadsheet tools. Julius answers questions about a file you upload. Powerdrill Bloom goes looking for insights and charts. AxonSheet does the dull third job. You're already in Excel, a column is a mess, and you don't want another tab. Turning a document into rows, filling in blanks and adding a column from a sentence are admin chores, and an add-in is the right place for them.
The $49 lifetime price is refreshingly simple. The catch is right next to it: you bring your own API key. That's better for privacy than a hosted spreadsheet chatbot, and harder to set up if you've never had an API key. Budget for the provider's usage on top of the one-off payment, and expect setup to take an afternoon before it starts saving you one.
Best for people who live in Excel on Windows or Mac and are happy to write their own prompts. It doesn't work in Google Sheets, and it won't explain your quarter unless you ask. Try it first on one messy column in a copy of a real workbook. If it can't handle your own headers, the rest of the feature list doesn't matter.