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Just Teachin Stuff

Formula Spreadsheet Tools

Working-formula spreadsheet tools built with Claude (budget, invoice and tax trackers)

Video published Oct 19, 2026 by Just Teachin Stuff

Startup cost: Near-zero cost (AI subscription plus Etsy listing fees) (our estimate; the video doesn’t give figures)

Source video

Just Teachin Stuff · 4 Digital Products You Can Build With Claude AI ↗

One of 4 gigs covered in this video

What It Is

You sell spreadsheets that do calculations for the buyer, such as a budget tracker, a small business profit calculator, or an invoice and tax tracker for freelancers. The creator writes a detailed prompt describing the formulas (totals invoiced, received and outstanding, a tax set-aside column, monthly and yearly summary tabs) and a plain-language instructions tab, and Claude builds the file. You check it in Google Sheets, list it on Etsy and deliver it as a link.

The Pitch

The creator says buyers now prefer spreadsheets to printables because typing in a number produces a result, making it a tool rather than a piece of paper. He calls it one of the easiest products to make, with no design skills needed. He shows estimate-tool figures of $17,405 and $4,475 a month for budget spreadsheet listings, and an ADHD-specific budget planner he says is about a month old and already past $1,000 a month.

Who It’s Best For

Detail-oriented people who are comfortable checking that formulas work and who understand the money or record-keeping problem they are solving.

The Truth (as we see it)

Spreadsheet templates are a real, steady seller on Etsy, and the sub-niche advice (such as the ADHD budget planner) is the most useful part of the pitch. You must test every formula yourself, because a broken calculation in a money tool leads to refunds and bad reviews. The headline figures are estimates from a research tool and represent top sellers, not typical results. The creator says Claude builds it in minutes, but buyers on Etsy compare many near-identical AI-built listings, so niche choice and presentation matter more than build speed. The creator sells a paid program (a 20-product-type module plus traffic training), gives away the prompts in exchange for an email address, and repeatedly promotes the Everbee research tool through a referral link.

Our assessment, based on the video and what’s typical across similar videos. We don’t independently verify income claims or prices.

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