Formula.dog turns a plain-English description of a spreadsheet problem into a working Excel or Google Sheets formula, and handles VBA and macros as well. The first five a day are free with no signup, and it has been running since 2022.
Formulas are a good fit for this treatment because the difficulty is almost never conceptual. Most people know exactly what they want the spreadsheet to do; what stops them is remembering whether it is INDEX/MATCH or XLOOKUP, and in which order the arguments go. That is a translation problem between intent and syntax, which is precisely what these models are good at – unlike the analytical judgement the spreadsheet is actually for.
No signup for the free tier is a real courtesy in a category that usually demands an account before showing you anything. One caution carries over from any generated code: a formula that returns a number is not necessarily a formula that is right. Test against rows where you already know the answer, particularly with lookups, where the failure mode is silently matching the wrong row rather than producing an error.
