Document Compare Engine

Every discrepancy. Every overbilling. Found.

Upload any two procurement documents — PO vs Invoice, Quote vs PO, Contract vs Change Order — and Levlr finds every price difference, every unauthorized charge, and every line that wasn't in scope.

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app.levlr.io — Document Compare · PO vs Invoice · Summit Mechanical

Lines matched

Price variances

$8,420

Overbilling detected

Line Item

PO Rate

Invoice Rate

Delta

Status

Supply AHU units (32)

$84,000

$89,600

+$5,600

VARIANCE

Ductwork fabrication

$31,500

$34,220

+$2,720

VARIANCE

Site supervision fee

—

$3,200

+$3,200

NOT IN PO

The Problem

Invoice overbilling is the most common procurement loss — and the hardest to catch manually.

The average construction project receives 200+ invoices. Checking each one against its PO takes 5–15 minutes per document — hours every week. Most teams don't catch rate drift until the project closes. Levlr cross-references every line in seconds and flags everything that doesn't match, including charges that were never in the original scope.

34%

of construction invoices contain at least one pricing error or unauthorized charge

What You Get

Six outputs, every analysis.

Price Variance Report

Every line item where the invoiced rate differs from the PO, with absolute and percentage delta. Sorted by exposure.

Unauthorized Charges Log

Items on the invoice with no corresponding PO line — flagged for approval or rejection before you pay.

Missing Items Register

Items in the PO that don't appear in the invoice — potential short delivery, omission, or billing dispute.

Unit Rate Drift Tracker

Tracks rate changes across multiple invoices from the same vendor over the project lifecycle.

Overbilling Summary

Total exposure: combined value of all variances and unauthorized charges. Know your number before you sign the check.

Dispute-Ready Report

Formatted PDF with every discrepancy, document references, and delta values — ready to send back to the vendor or subcontractor.

How It Works

Upload to results in under 60 seconds.

Upload two documents

PO and Invoice, Quote and PO, Contract and Change Order — or any two versions of the same procurement document.

AI cross-references every line

Levlr extracts all line items from both documents and maps them against each other, regardless of format differences or column order.

Review flagged items

Interactive table showing matches, variances, missing items, and unauthorized charges — with a confidence score on each finding.

Export or dispute

One-click dispute-ready PDF for your vendor, or export to Excel for your accounts team or project controller.

Use Cases

Built for how construction procurement actually works.

PO vs invoice verification

Quote vs awarded contract check

Change order vs scope validation

Materials delivery vs purchase order

Subcontractor pay app review

Interim payment application audit

Schedule of values (SOV) reconciliation

Retainage release verification

Final account review

Owner's Rep invoice audit

Pricing

Free to try. No account required.

Upload your own documents above and get a real analysis emailed to you — free. Upgrade when you're ready.

Free

^$0/mo

All 5 engines. Watermarked exports. No time limit.

Pro

^$99/mo annual

Unbranded exports, full history, vendor database.

Team

^$229/mo annual

5 seats, shared vendor DB, role-based access.

See full pricing →

Check your next invoice — free.

Upload your own documents and get a full analysis emailed to you within minutes.
No account, no credit card, no templates.