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Sum Buddy

An AI spreadsheet that writes your formulas

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What Sum Buddy is

A spreadsheet application with an AI assistant built in. Instead of looking up function syntax, you ask for the calculation in plain language and the assistant writes the formula, or builds a whole sheet from a description.

Templates for invoices, monthly budgets and to-do lists cover the common starting points.

What you can do with it

  • Describe a calculation and get the formula written for you
  • Ask for a whole new spreadsheet from scratch
  • Start from the invoice, budget or to-do templates
  • Save documents to the account and reopen them later
  • Work on small business trackers without desktop Office

Who it is for

  • People who use spreadsheets occasionally, not daily
  • Small business owners tracking invoices and budgets
  • Users intimidated by formula syntax
  • Anyone who wants a browser spreadsheet with AI help

What to watch out for

  • AI-written formulas still need checking against real numbers before you rely on them
  • It is a younger product than the major spreadsheet suites, so feature depth and export options are narrower
  • Files live in the account; confirm export paths before moving critical data in
  • Tiered plans limit how much AI use each level includes

Pros & cons

✓ What we like

  • Removes the formula-syntax barrier
  • Practical templates included
  • Browser-based with saved documents
  • Simple to learn

! What to watch out for

  • Narrower feature set than established suites
  • AI output needs verification
  • Plan tiers cap AI usage

FAQ

What can the AI do?

Write formulas on request and build spreadsheets from a description.

Are there templates?

Yes. Invoice, monthly budget and to-do list templates are the listed starters.

Where do files live?

They save to your account in the browser app.

Last reviewed: 2026-09-15

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