Built for Amazon AFP and DSP Owners

Your vendors are
overbilling you. Zena proves it.

Upload an invoice or settlement. Get a full audit with exact dollar amounts, every overcharge flagged by name, and a ready-to-submit dispute — in minutes.

30-day free trial
Full Prime access during trial
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app.zena-audit.com / dashboard
● LIVE
Critical Flags
3
Flagged this period
Identified Recovery
$1,840
Potential recoup
Audits Completed
14
This month
Labor rate exceeded by $45/hr — Vendor: Metro Diesel, Invoice #WO-38821. Dispute process available.
$1,200+
Average overcharge uncovered per carrier per month
87%
Of audited invoices contain at least one billable error
5 min
From upload to full dispute-ready audit report
Based on Zena audit data · Updated quarterly
What Zena Does

Four Ways Zena Protects Your Bottom Line.

Zena monitors the financial details that take hours to review manually — and flags every discrepancy before it costs you.

Maintenance Invoice Audit
Submit any maintenance invoice and Zena cross-references every line item — labor rates, parts pricing, and fees — against verified regional benchmarks to pinpoint overcharges precisely.
Pay Settlement Audit
Verify every route, adjustment, and earned incentive is reflected in your settlement. Zena flags missing route credits, incorrect deductions, and unpaid performance bonuses.
Instant Dispute Reports
Receive a structured, professional report in minutes — with each discrepancy, the dollar amount at stake, documentation to include, and exact steps to initiate a dispute.
24/7 Audit Assistant
Ask Zena any operational or financial question at any hour — rate benchmarks by region, settlement breakdowns, dispute best practices — answers available whenever you need them.
How It Works

Three steps.
Minutes, not hours.

No training. No spreadsheets. No accounting background required.

01
Upload Your Document
Drop in a maintenance invoice PDF from any vendor, or upload your AFP settlement Excel with your route history CSV. Zena reads it instantly.
02
Zena Audits Every Line
Every labor rate, parts charge, fee, block rate, carry-over, and deduction is cross-referenced against benchmarks. Overcharges and missing credits are flagged with exact dollar amounts.
03
Get Your Dispute — Ready to Submit
Zena generates a formatted, ready-to-submit dispute for every flagged item. Copy it and submit it.
Ask Zena

Your 24/7 AFP & DSP Audit Advisor

A dedicated AI built for AFP and DSP operations — available around the clock to answer any question about rates, settlements, invoices, or disputes. No waiting for callbacks.

Rate Benchmarking On Demand
Ask whether any labor rate, parts charge, or shop fee is fair — by vehicle class, repair type, and region — and get a specific answer in seconds.
Settlement Question Answering
Confused by a deduction or missing block? Describe it and get a plain-language breakdown of what it means, whether it's correct, and what to do about it.
Dispute Strategy Guidance
Ask what to document, how to frame your case, and the most effective path to resolution — guidance calibrated to your specific situation and vendor.
5 free questions · No account required
Zena
Available 24/7
Is $160/hr fair for a brake job on a Class 7 in Texas?
That exceeds the regional benchmark. Standard diesel mechanic rates in Texas run $95–$140/hr. At $160/hr you're looking at a potential overcharge of $20–$65 per labor hour. Want me to generate a dispute?
Yes — and what do I need to submit it?
Pulling your dispute checklist and step-by-step Amazon Resource Center submission guide now…
Ask Zena anything...
Pricing

Simple, Transparent Pricing

Start with Starter and pay for what you need. Or go Prime and never think about it again.

Monthly
Annual SAVE 23%
Starter
Audit invoices and settlements one at a time. Perfect for carriers just getting started with Zena.
$ 9 .99
per month — billed annually
$119.88 billed annually — save $35.88/year
  • Unlimited single-invoice audits
  • Unlimited single settlement audits
  • 4 AI-generated dispute reports per month
  • Step-by-step dispute guidance
  • Audit history & recovery tracking
  • Bulk fleet upload & multi-invoice analysis
  • Cross-invoice pattern detection
  • 24/7 Zena AI advisor
Credit card required  ·  Cancel anytime
Your invoices are analyzed and gone. We never store, share, or keep your documents.
No contracts. Cancel anytime, no questions asked.
30 days free. Full Prime access. No charge until your trial ends.
Real Audit Results

What Zena finds in real audits

Examples of overcharges and discrepancies uncovered by Zena across maintenance invoices and pay settlements.

SETTLEMENT GAP
$612.00
An AFP carrier's Wk 11 settlement was missing payment on 3 carry-over blocks from the prior week totaling 39 hours. The blocks appeared in the route history but were never reflected in the settlement payout.
AFP Pay Settlement · Wk 11 · Jan 2026
OVERCHARGE FOUND
$504.00
A roadside vendor billed over $1,400 as a single "VENDOR INVOICE" at "1 hour" for a windshield replacement. No parts itemization. No labor breakdown. No way to verify what was actually charged or installed.
Roadside Invoice · Unit #864712 · Mar 2026
OVERCHARGE FOUND
$440.00
A fleet shop charged $440 on a work order marked CANCELLED. After 4 hours of diagnostics, the unit was sent to a dealer — no repairs completed. The full amount was billed anyway.
Maintenance Invoice · Unit #907441 · Feb 2026
Common Questions

Everything you need to know before signing up.

Yes. Zena is purpose-built for both Amazon Flex Partners (AFP) and Delivery Service Partners (DSP). It understands the specific settlement structures, pay types, and deduction categories unique to each program.
All uploads are encrypted in transit and at rest using 256-bit SSL. Your documents are used solely for audit analysis and are never stored beyond your session or shared with any third party.
Zena's dispute reports include exact dollar amounts, the specific benchmark or rule violated, line-item evidence, and step-by-step submission guidance formatted for the Amazon Resource Center. They're built to be specific enough that vendors can't dismiss them. If a dispute is denied, Zena also provides escalation paths to help you push further.
No. Zena is designed for operators, not accountants. You upload your invoice or settlement document, and Zena handles the analysis — flagging discrepancies in plain language with clear next steps. No spreadsheets, no formulas required.
See all 20 questions
87% of invoices contain at least one billable error. Find yours before your next payment clears.
Starter
$9.99/mo annual
2 audits/month
Best Value
Prime
$49.99/mo annual
Unlimited audits
Billing cycle
Monthly Annual –23%
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