SaferSheets
8 tools. 50+ checks. From $0/month.
AI-Powered Spreadsheet Auditing: Formulas, Data, Consistency & Workbook Handovers.
From broken formulas and silent percent drifts to chart links hiding in inherited workbooks — upload a file, get a per-cell health report with one-click fixes, and download a corrected copy. The original is never modified.
Audit. Validate. Trust your data.
8 tools live, 3 more coming. No credit card required.
See it work
One file in. Cell-level fixes out. Pick a tool below.
Click any tile to see what the tool produces. Mockups today, recorded screen captures dropping with the v1.0 launch.
Formula Doctor
Finds broken formulas and proposes a fix for each.
| 45 | Q1 | 1,200 | 1,150 | 98% | |
| 46 | Q2 | 1,310 | 1,280 | 98% | |
| 47 | Q3 | 1,420 | 1,380 | ? | |
| 48 | Q4 | 1,580 | 1,510 | 96% |
High · FD03
D47
Formula returns empty — division by zero risk.
Pricing
Pay for what you audit. Nothing more.
One credit covers one small audit. Bigger files cost more credits — usage tracks the actual compute your file needs. Pick a monthly plan if you audit regularly, or buy a one-off credit pack when you don't.
Rough math, same on every tier: N credits ≈ N small audits. 100 credits ≈ 100 audits, 1,000 credits ≈ 1,000 audits — you do the math. Files larger than 5 MB cost more (see the table below the tiers).
Free
For individual analysts trying the toolbox.
30 credits / month
- All 8 live tools
- 30 credits per month (~30 small audits)
- Files up to 10 MB
- .xlsx, .xlsm, and .csv support
- Cell-level findings with explanations
- 7-day run history
- Browser-based — no install required
- Email support
Pro
For finance and ops pros running audits weekly.
300 credits / month
- Everything in Free, plus:
- 300 credits per month (~300 small or ~100 medium audits)
- Files up to 50 MB
- 90-day run history
- Annotated downloads — cell comments, severity highlights, change-report sheet
- Type-your-own canonical values during review
- Compare Workbooks two-version diff
- AI workbook narrative on Explain This Workbook
- Save drafts mid-review and resume later
- Priority email support (next business day)
Pro Plus
For heavy users and audit consultants.
1,000 credits / month
- Everything in Pro, plus:
- 1,000 credits per month (~125 max-size 50 MB audits)
- 1-year run history
- Multi-viewer sharing — invite up to 3 read-only reviewers per run
Need a one-off top-up? Buy a Credit Pack — $9 / 50 credits.
How credits work
One credit per small audit. Bigger files cost more.
Credit cost scales with file size because bigger workbooks take more compute to parse, compare, and annotate. No hidden multipliers — what you see below is what every tool charges, regardless of which tool you run.
| File size | Credits per audit | Typical workbook |
|---|---|---|
| ≤ 5 MB | 1 credit | Most monthly P&L / cap table / forecast files |
| 5 – 25 MB | 3 credits | Multi-sheet financial models, ops trackers |
| 25 – 50 MB | 8 credits | Heavy data dumps, valuation models with embedded charts |
Compare Workbooks counts as two audits because it parses two files (one credit charge per file, per the table above). Every other tool charges once per run.
Pay as you go
Need a top-up? Buy a credit pack.
For one-off audits, an M&A diligence batch, or a quarter-end cleanup. Credits never expire for 12 months and stack on top of any monthly allowance.
Credit pack
Best valueOne-off purchase. Covers ~50 small audits or roughly 15 medium ones.
The toolbox
Each tool has one job and does it well.
Pick the tool that matches the problem in front of you. The shared review surface — accept, reject, type your own value, download — is the same across every tool, so the muscle memory carries over.
Pre-Send Audit
Before you send your spreadsheet, let SaferSheets check it.
Open →
Formula Doctor
Upload a workbook. Get a corrected copy with explanations.
Open →
Clean My Data
Upload a messy export. Download a clean version.
Open →
Explain This Workbook
For when you inherit a spreadsheet and nobody knows how it works.
Open →
Consistency Scanner
Catch the silent drifts your eye won't.
Open →
Hardcode Detector
Find the magic numbers buried in your formulas.
Open →
Compare Workbooks
Two versions in. Risk-ranked changes out.
Open →
Break External Links
Strip every cross-workbook link Excel can't reach.
Open →
Pivot Plan
Tell us what you want to know. We plan the pivot.
Structure Fixer
Make this file analysis-ready.
Speed Up My Sheet
Find what's making your file slow.
How it works
Three steps from suspicious file to clean handover.
- 1
Upload your file
Drag and drop an .xlsx, .xlsm, or .csv. Up to 50 MB. Your original is uploaded once, stored encrypted, and never overwritten.
- 2
Review findings
See every issue with its cell address, an AI-grounded explanation of why it matters, and a recommended fix. Accept what you trust, reject false positives, type your own value when you know better.
- 3
Download a corrected copy
Get a new workbook with your accepted changes applied. Optional add-ons: cell comments on every finding, severity highlights, and a Change Report sheet with clickable cell links.
Why SaferSheets
Built for finance, ops, and analytics teams who can't afford a silent rounding bug.
Your file is never modified
Every fix is applied to a copy. The original sits untouched in storage so you can compare and back out at any time.
Per-finding review
No opaque 'auto-fix everything'. Every change is shown with a preview of the surrounding cells before you accept it.
Explanations grounded in your file
AI commentary is generated from the structured scan output — never from raw cell contents. So no hallucinated columns and no guessed values.
Annotated downloads
Cell comments on each finding, severity-coloured highlights, and a Change Report sheet whose row links jump straight to the cell. Hand it to a reviewer.
FAQ
Common questions.
Will SaferSheets modify my original file?+
No. Every tool reads your file, produces a corrected copy as a new .xlsx, and leaves the original untouched. You always have a clean rollback point.
What file types do you support?+
.xlsx, .xlsm, and .csv up to 50 MB. Google Sheets support is on the roadmap — for now, export to .xlsx and upload that.
Is my data secure?+
Files are uploaded over TLS, stored encrypted at rest, isolated per user account, and only readable by you. You can erase any run from history with one click — it cascades through scans, findings, and storage objects.
What's the difference between Pre-Send Audit and Formula Doctor?+
Pre-Send Audit is a broad health check — score, issue counts, action plan. Formula Doctor goes deeper on formulas: it finds broken or risky ones, proposes a fix for each, and produces a corrected workbook once you've reviewed the changes.
How is this different from Excel's built-in error checking?+
Excel flags syntax errors and circular references. SaferSheets flags the things Excel can't see: typed values overriding a formula column, percent columns mixing 5 and 0.05, sibling sheets whose template drifted, charts secretly linked to other workbooks, and many more.
What does it cost?+
Pricing is credit-based. One credit covers a small (≤5 MB) audit; bigger files cost 3 or 8 credits per audit (see the table in the Pricing section). Free, Pro, and Pro Plus tiers come with a monthly credit allowance, or you can buy a $9 / 50-credit pack as a one-off top-up.