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Blockema

Find and fix spreadsheet errors without writing formulas

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Duplicate invoices, invalid IBANs, repeated customer emails: Blockema finds them in your Excel or CSV in seconds, before they cost you money. Drop in a file and it suggests rules for every column. Add your own by dragging blocks (no formulas), including rules that compare rows or depend on another column. Jump to each error, fix it and download the corrected file with its formatting intact. Runs in your browser, so your file never leaves your computer. Same rules, same result, every time.

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PH · launched Oct 22, 2026 · 2 upvotes (top 23%)

Similar launches

See all 127 similar launches →

Could you build this?

Yes A spreadsheet validator with a block-based rule builder is a parsing and rules-engine app that can be built with standard libraries and AI-assisted code.

Competitors

Other products that read as similar to this one : 127 launches clear the similarity bar, closest 8 shown.

Attention rank: #16 of 128 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).

Launched 315 days after the earliest competitor.

Other launches for this product