Local-first Excel AI rewriter

Let privacy-conscious Excel users edit formulas and data with plain English

Problem

Many people can't recall Excel formulas or write VBA, but uploading entire spreadsheets to cloud AI feels risky. Most AI spreadsheet tools require sending the original file, so compliance-sensitive users avoid them.

Solution

A desktop app or browser extension that parses Excel locally and sends only column names, data types, and a sampled summary to the LLM. It returns formulas or transformation steps, applies them locally, shows a diff for every change, and only saves after confirmation. Files never leave the machine.

Users

Finance, ops, and HR professionals who live in Excel but avoid complex formulas, especially those in companies with data-compliance requirements.

MVP

Import xlsx/csv and parse locally; generate formulas or transformation steps from plain-language requests; show before/after diffs for confirmation; write changes back locally; export an operation log.

Revenue

Free tier plus one-time purchase or annual subscription (~$39/year); on-premise team licenses per seat.

Why now

Cheap models like DeepSeek make summarize-then-generate cheap, while corporate fear of data egress is peaking. An indie developer can ship an MVP with existing spreadsheet parsing libraries and no model training.