Free health score in any cell. Catches broken references, mixed data types, and formula drift — in one click, unlimited, no AI call needed. AI formula generation built in.
Four classes of silent spreadsheet bugs that make reports wrong and decisions worse. Every one is found deterministically — no AI guesswork, no quota hit.
=VLOOKUP(A2, #REF!, 3, FALSE)
Formulas that point at a deleted range — they look fine until someone runs a report on them. SheetBrain flags every one and proposes the fix.
G2: 15000
G3: "15,000"
G4: 15000.50
A single column with numbers and number-strings silently breaks SUMIFS, AVERAGE, and every aggregation downstream. Check finds them column by column.
A2: SKU-001 → $19
A3: SKU-001 → $24
VLOOKUP / XLOOKUP silently returns the first match when your key appears twice — a quiet way to ship wrong numbers in pricing sheets and joins.
Salary (col F) → Compensation (col G)
Columns get renamed or moved; your formulas keep referencing the old position. Repair snapshots your layout and rewrites every affected formula in one click.
Each of these is invisible until a report lands in front of a stakeholder. SheetBrain catches them in seconds — and only calls AI when you explicitly ask it to.
SheetBrain is the only Google Sheets™ add-on with deterministic error detection. Check finds bugs, Repair fixes drift, Audit makes it shareable — all free, all unlimited.
One click finds the three bugs that silently break spreadsheets: broken references, columns with mixed text and numbers, and duplicate lookup keys. No AI call, unlimited use — works on any sheet, any plan.
=IF(ISNUMBER(G2), G2, VALUE(G2))
"Column G contains both 15000 and '15,000'. Wrap in VALUE() to coerce."
Renamed a column? Moved one to a new position? SheetBrain remembers your sheet's layout from the last time your formulas worked and proposes batch rewrites for every formula that broke — preview, uncheck any you don't want, apply the rest in one click.
=SUMIFS(G:G, E:E, "Engineering")
Previewed before apply. Snapshot refreshes automatically after a clean batch.
Run a full spreadsheet audit and share it as a public link — no login required for viewers. Stakeholders see every issue SheetBrain found with severity, counts, and proposed fixes. Reports expire after 30 days; revoke anytime.
sheetbrain.app/audits/abc123
"6/10 health — 14 issues across 3 sheets. Shared, revocable, expiring."
Other AI tools generate formulas in a vacuum — they don't know your column names, your data types, or your sheet layout. That's why their formulas reference columns that don't exist.
SheetBrain scans your active sheet before generating anything. The result? Formulas that actually reference your data. And if the right answer lives on another tab, Auto mode can use the current sheet or other sheets when needed, while manual targeting lets you lock to one sheet or combine up to five selected sheets.
They're built for writing AI output into cells. SheetBrain is built for making sure the spreadsheet around those cells isn't broken.
| SheetAI™ | GPT for Work™ | Google =AI() | SheetBrain | |
|---|---|---|---|---|
| Detects spreadsheet bugs | No | No | No | Yes |
| Schema drift repair | No | No | No | Yes |
| Shareable audit reports | No | No | No | Yes |
| No API key required | BYO-key ($20/mo) | BYO-key | Workspace only | Yes |
| Reads full sheet context | Partial | Partial | Text only | Yes |
| Formula debugging | No | No | No | Yes, root-cause |
| Transparent pricing | $20/mo + token packs | Usage-metered | Bundled, quota-limited | $9/mo flat |
Comparison based on publicly available information as of April 2026. SheetAI™ and GPT for Work™ are trademarks of their respective owners. Competitor features and pricing may change — we review this table quarterly.
Formula generation is the thing everyone else leads with. For us it's a side benefit of already having read your sheet for bugs.
Describe what you need in plain English. SheetBrain reads your headers, data types, and column positions — and writes a formula that references your actual data, not imaginary columns.
=SUMIFS(F:F, C:C, "North", K:K, "Paid")
Inherited a spreadsheet full of cryptic formulas? Paste any formula and get a clear breakdown. Finally understand what that 200-character SUMPRODUCT actually does.
=SUMPRODUCT((C2:C21="North")*(F2:F21)*(G2:G21))
↓
"Multiplies unit price by quantity for every row where region is North, then sums."
Got a #REF!, #VALUE!, or #N/A? Paste the broken formula and the error. SheetBrain finds the bug and gives you the fix — with an explanation of what went wrong.
=VLOOKUP(A2, B:C, 2, FALSE)
"Column index 3 exceeds the 2-column range B:C. Changed to 2."
No configuration. No API keys. No account creation. Just install and go.
Install from the Google Workspace Marketplace today. Works with any Google account — free or paid.
Open the sidebar and type in plain English. Or type =SHEETBRAIN("your query") directly in any cell.
Click "Apply to Cell" — the formula drops in, referencing your actual columns. Done.
Six SheetBrain capabilities are available as formulas you can type directly into a cell — no sidebar required. Two are free and deterministic; four use AI and count against your monthly quota. Debug, Schema Repair, and Audit reports still run from the sidebar.
=SHEETBRAIN_HEALTH(range)
Free · No AI
Instant health score for any range. Runs the deterministic Sheet Check — broken refs, mixed types, duplicate keys — and summarizes as a single cell value. Point it at a dashboard header for at-a-glance spreadsheet quality.
=SHEETBRAIN_HEALTH(A1:G20)
→
6/10 — 14 issues
=SHEETBRAIN_ISSUES(range)
Free · No AI
Spills a full table of findings for the range you point at — severity, cell reference, issue type, explanation. Great for building a live health dashboard that updates whenever you recalc.
=SHEETBRAIN_ISSUES(A1:G20)
→
[spilled table of every issue]
=SHEETBRAIN(query)
1 AI call
Describe what you need in plain English and get a formula back — sheet-context aware, referencing your real columns. The Generate tab without opening the sidebar.
=SHEETBRAIN("average price for Electronics")
→
=AVERAGEIF(E:E,"Electronics",F:F)
=AI_EXPLAIN(formula)
1 AI call
Plain-English breakdown of any formula, right in a cell. Paste a cryptic SUMPRODUCT or a nested IF, get a clear one-sentence explanation you can read without leaving the sheet.
=AI_EXPLAIN("=VLOOKUP(A2,B:D,3,0)")
→
"Looks up A2 in column B, returns the matching value from column D."
=SHEETBRAIN_EXTRACT(text, schema)
1 AI call
Pull structured fields out of unstructured text — name, age, city, anything you can name. Spills as a 2-row table (header row + value row) so it slots into any spreadsheet layout.
=SHEETBRAIN_EXTRACT("John, 32, NYC", "name, age, city")
→
John | 32 | NYC
=SHEETBRAIN_CLASSIFY(text, labels)
1 AI call
Classify text into one of a set of candidate labels you supply. Perfect for tagging support tickets by sentiment, routing emails by topic, or grouping survey responses into buckets.
=SHEETBRAIN_CLASSIFY("This is frustrating", "positive,negative,neutral")
→
negative
AI custom functions cache their result until you force a recalc with ⌘⇧F9 (Mac) or Ctrl⇧F9 (Windows) — so a page reload won't silently re-charge AI calls.
No credits. No tokens. No hidden API costs. No "bring your own key." Just a flat monthly price with AI included.
Most AI spreadsheet add-ons charge $19–$25/month — and some still make you bring your own API key on top of that. SheetBrain is $9/mo with AI included. No extra keys. No hidden costs.
Sheet Check scans the active sheet for three classes of bugs that silently break spreadsheets: broken references (formulas pointing at deleted ranges, VLOOKUP column indexes larger than the range), columns where numeric and text values are mixed together (which breaks SUMIFS and COUNTIFS), and duplicate keys in columns used by VLOOKUP or XLOOKUP. Every scan is free and unlimited — no AI call, no quota hit. When a finding has an obvious deterministic fix, SheetBrain proposes it directly; when it needs judgement, you can optionally ask Claude to propose a rewrite (that one counts against your plan, and only for the finding you clicked into).
SheetBrain quietly snapshots your sheet's column layout each time you successfully run Generate or Debug. Later, if you rename a header, move a column to a new position, or delete one, Repair compares the live sheet against the last snapshot, finds every formula that still references a drifted column, and asks Claude to propose a safe rewrite for each. Preview all the rewrites in a single dialog, uncheck any you don't want, and apply the rest in one click. One of the few features on the Marketplace that actually understands what changed in your sheet since your formulas were last working.
Type =SHEETBRAIN_HEALTH("A1:G20") in any cell to get a health score (e.g. "6/10 — 14 issues found") for the range you point at. It runs the same deterministic Sheet Check under the hood — broken references, mixed data types, duplicate lookup keys — and summarizes the result as a single cell value so you can put it at the top of a dashboard, in a status column, or anywhere you want at-a-glance spreadsheet health. Pair with =SHEETBRAIN_ISSUES() to spill the full list of findings as a table. Both are free and do not count against your AI quota.
Yes — anyone with the link can view your audit report, no Google account required. The URL contains a long random token, reports expire after 30 days, and you can revoke any report at any time from the Health tab. Inside the report we show what the add-on found (severity, counts, proposed fixes) but never row-level spreadsheet data.
Yes. SheetBrain reads your column headers and data types to understand your sheet structure, and it can optionally send a few sample rows if you turn on sample sharing for better accuracy. We never store your spreadsheet data — it's processed in memory and discarded immediately. See our Privacy Policy for details.
Gemini™ in Sheets is a general AI assistant bundled with paid Google Workspace — great for summarizing a tab or drafting text in a cell. SheetBrain is a specialized spreadsheet health and formula tool that reads your sheet's structure, sample data, and headers before scanning for bugs, generating formulas, or debugging. Gemini™ can't find broken references or repair schema drift. Works on any Google account including free Gmail™.
ChatGPT doesn't know your spreadsheet. It generates formulas referencing generic column names that don't match your data. You end up copy-pasting between tabs and fixing references manually. And ChatGPT can't scan for broken references or detect schema drift — those require a tool that lives inside your spreadsheet and reads it deterministically.
No. Unlike most alternatives that require you to bring your own API key, SheetBrain includes AI processing in the price. No OpenAI key, no Anthropic key, no surprise API bills. Just install and use.
Everything from basic SUM and VLOOKUP to complex SUMPRODUCT arrays, nested IFs, QUERY functions, INDEX/MATCH, date calculations, conditional formatting rules, and cross-sheet references.
Auto mode lets SheetBrain use the current sheet or another sheet when needed. If you want more control, Single mode locks generation to one selected sheet, and Multi mode lets SheetBrain combine up to five selected sheets.
You get 15 free AI calls per month, resetting on the 1st. That's more generous than most competitors' free tiers. When you hit the limit, you can upgrade to Pro for 1,000 calls/month. No penalty, no lockout — just a pause until the reset or upgrade.
No. SheetBrain formulas resolve once and stay as static values. Unlike some competitors where every page reload re-runs (and re-charges) AI formulas, SheetBrain only uses a call when you explicitly ask it to.
Yes. Cancel in one click, keep Pro access until the end of your billing period. No cancellation fees, no hidden retention flows, no questions asked. We don't do stealth auto-renewals.
15 free calls. No credit card. Install in 10 seconds.
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