AI assurance framework
Add governance and sign-off controls to AI agent outputs.
Explore AI assurance AI-powered spreadsheet review
Review everything.
Review everything.
Miss nothing.
Close with confidence.
Rockhopper is the AI review layer built for finance teams — catching errors, explaining changes, and reconciling data before anyone else sees your numbers.
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83% Faster review cycles
10+ Error types detected
Multi-tab Workbook coverage
SOX Audit-trail ready
The problem
Manual spreadsheet review is a material risk. Finance teams spend hours reviewing model versions, chasing broken links, and manually tying out numbers to source data — often during close. One missed formula, one hardcoded override, one transposition error, and you're explaining it to the audit committee.
01 · Version blindness
You can't tell what changed
You can't tell at a glance what changed, who changed it, or whether it's material. Every review is a treasure hunt.
"Which cells were modified?"
"Was the change structural or just an input?"
"Is this a 0.1% delta or a 10% one?"
02 · Silent errors
Errors compound in silence
Broken external links, circular references, and hardcoded overrides sit undetected across hundreds of cells until they matter most.
Broken link: //server/Q3_actuals.xlsx
Circular ref: D14 → G22 → D14
Hardcoded override: was =SUM(), now 4,200,000
03 · Manual reconciliation
Reconciliation is manual and fragile
Tying sub-ledger details to summary totals, cross-checking against source documents — each one a time-consuming, cognitively taxing task.
Sub-ledger total: $4,312,891
Summary total: $4,312,901
Variance: $10 — is it rounding or an error?
04 · Close pressure
Close pressure amplifies risk
When it matters most, you have the least time. Month-end and quarter-end are when errors slip through — and when they cause the most damage.
"It's day 2 of close."
"The depreciation schedule doesn't tie."
"The CFO review is tomorrow."
What Rockhopper does
Three capabilities. One review agent. Rockhopper works across your workbook, surfacing what changed, what's broken, and what doesn't tie — in plain English, before you sign off.
01 — Change Review
Know what changed and why it matters
Rockhopper compares versions and delivers a ranked, plain-English summary of every material change — classified, contextualized, and grouped by business logic.
Materiality flags Structural vs. input Business-logic grouping Change narrative
02 — Error Detection
Surface what's broken before your auditor does
Linting for finance: detect formula inconsistencies, flag outliers vs. historical patterns, identify broken links, and get auto-classified findings with suggested fixes.
Formula audit Severity ranking Suggested fixes Review comments
03 — Automated Tie-Out
Reconcile to source. Trust your numbers.
Cross-check sub-ledger details against summary totals, reconcile attached source documents, and flag any variance that doesn't belong — across every tab in the workbook.
Sub-ledger match Variance flagging Source reconciliation Reconciled item log
Change review in depth
"What actually changed — and does it matter?"
Stop reading cell by cell. Rockhopper produces an executive-ready change summary the moment two versions are compared.
- Classifies each change as structural (formula logic) or input (assumption/data)
- Flags materiality with context: "Revenue forecast reduced 8% due to pricing change in Sheet 3, B14"
- Groups related changes by business logic — pricing, volume, OpEx, headcount
- Produces a sign-off-ready narrative for leadership and audit review
- Tracks repeated changes across versions to surface model drift
Error detection in depth
Audit your finance spreadsheets.
Rockhopper scans every formula, link, and data point — flagging what looks wrong, what's inconsistent, and what's silently broken. With severity ranking, so you know what to fix first.
- Detects broken external links, circular references, and hardcoded overrides
- Flags statistical outliers relative to historical versions
- Identifies formula inconsistencies across rows and columns
- Auto-classifies findings by severity: critical, review, informational
- Suggests likely fixes and surfaces unresolved prior-version comments
- Asks intelligent follow-up questions where context is needed
“The month-end close isn't when you want to be discovering a broken link or a hardcoded number that's been sitting there for two quarters.”
What every Controller has said, privately, at least once.
Built for finance teams
Made for everyone in the office of the CFO.
Whether you're closing the books, stress-testing a model, preparing for an audit, or presenting to the board — Rockhopper gives you the confidence your numbers deserve.
Senior FP&A Analyst
It's day 3 of the budget cycle. You have 6 versions of the operating model, two contributors who updated assumptions without telling you, and a CFO review in 4 hours. You need to know what changed and whether any of it matters.
Controller
It's day 2 of month-end close. You're reconciling the G/L to the sub-ledger, reviewing the depreciation schedule, and preparing the flux commentary. One unexplained variance and you're not closing on time.
Treasury Analyst
You manage the company's liquidity position, bank relationships, and FX exposure. A formula error in a 13-week cash flow or borrowing base certificate isn't an inconvenience — it breaks a covenant or misrepresents availability to your lenders.
Capital Markets Associate / VP
You're pricing a bond, finalizing an LBO model, or running acquisition analysis ahead of a management presentation. These models go directly to investors, boards, and counterparties. An error isn't caught in review — it's caught by the other side of the table.
Tax Director / Senior Tax Manager
Reviewing the quarterly tax provision before the 10-Q drops, or reconciling the effective tax rate for the board. An error in your deferred tax asset calculation or apportionment factor doesn't just affect the provision — it affects earnings per share.
Your spreadsheet reviewed before anyone else sees it.
Related resources
Keep exploring
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Version control foundation
See how version lineage powers trustworthy AI-assisted reviews.
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AI-powered review · Excel & Google Sheets
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Your spreadsheet reviewed
before anyone else sees it.
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