Excel Technical Review with AI
Let AI do the first pass of your Excel workbooks. Triple-check formulas, references, and catch errors before they cost you.
How it worksFound 3 issues across 6 sheets:
| Severity | Location | Issue |
|---|---|---|
| 🔴 Error | Projections!B3 | #REF! error — deleted reference |
| 🟡 Warning | Revenue!B7 | =SUM(B2:B4) excludes B5 |
Six checks across every cell
The toolkit scans your entire workbook automatically. AI then reviews every finding so you only see what actually matters.
Error Values
Catches #REF!, #DIV/0!, #NAME?, and other error values hiding in your formulas.
Circular References
Maps cell dependencies and detects circular chains that produce unreliable results.
SUM Range Gaps
Flags SUM formulas that skip adjacent data rows — the classic "new row not included" mistake.
Broken Propagation
Spots formulas that break the pattern of their neighbors, like a growth rate that suddenly changes.
Cross-Sheet Anomalies
Checks every cross-sheet reference to make sure it points to a cell that actually has data.
Hard-Coded Values
Finds literal numbers embedded in formula-heavy regions where a formula is expected.
How it works
No setup. No configuration. Just upload your file and ask for a review.
Upload your workbook
Drag and drop any .xlsx file, then press Analyze. Works for workbooks of any size — from a few sheets to fifty.
Watch the checks run
A deterministic engine scans every cell across all sheets, showing each check as it completes — in seconds, not minutes.
Review your report
Get a clean, at-a-glance summary of errors, warnings, and review items. Drill into any finding, or download the PDF to share.
Built for sensitive financial models
Your models hold sensitive, material information. TieOut is built to the security and privacy standards financial firms expect — so you can review your work with confidence.
Encrypted end to end
Every upload, analysis, and stored report is encrypted in transit with TLS and at rest with AES-256.
Isolated, ephemeral processing
Each workbook is analyzed in its own isolated environment that is destroyed when the run finishes. Your data is never shared across customers.
Your data stays yours
Your workbook never leaves our servers, and we never sell your data or use it to train AI. Delete any analysis and its underlying file at any time.
TLS in transit · AES-256 at rest · Per-customer isolation · Least-privilege access · Retention & deletion controls · SOC 2 Type II audit in progress with an independent firm. See our Privacy Policy for details.
Catch errors before they cost you
Manual reviews take hours and still miss things. Let AI do the first pass so you can focus on what matters.