Observed arrival · 2026-10-14
Proper Spreadsheets checks spreadsheet formulas
Upload an Excel, CSV, or Google Sheets file to get formula errors and other selected spreadsheet mistakes identified by cell, with their estimated cost.
○Open
⊠Login
$Paid
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✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- People checking spreadsheets with formulas
- Worth noticing
- The sample report traces a £21,390 omission to a sum ending at row 50 while the data continues through row 73.
Field notes
The checker accepts .xlsx and CSV files up to 20 MB, or fetches a Google Sheet shared with anyone who has the link. Its sample report follows an incomplete sum to a specific cell and estimates the omitted amount at £21,390. The page excludes .xls and .xlsm files, and says it checks selected patterns rather than every possible mistake.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
⊠LoginAccess appeared gated
$PaidCommerce or pricing visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
One card from the complete issue