How does Warnvo scan bills?

Take a photo of any bill — hotel, medical, restaurant, contractor — and Warnvo's AI analyzes it in seconds. It identifies overcharges, junk fees, and illegal charges, then generates a ready-to-send dispute letter.

What languages does Warnvo support?

Warnvo works in 95 languages. You can scan bills in any language — Japanese, Arabic, Spanish, Portuguese, French, German, Thai, and 87 more — and receive results in your preferred language.

Can Warnvo detect scam texts and emails?

Yes. Warnvo's Scam Detector analyzes text messages, emails, and phishing links before you click. It catches fake FedEx texts, fake bank alerts, IRS scams, and smishing attempts.

Is Warnvo different from ChatGPT?

Yes. Warnvo is trained specifically on consumer protection law — not general knowledge. It knows the specific laws, regulations, and consumer rights that apply to your situation, and generates legally-grounded dispute letters you can actually send.

How much does Warnvo cost?

Warnvo offers a free tier with 3 scans per day. Pro is $19.99/month or $149.99/year for unlimited scans. Family Shield covers up to 6 people for $14.99/month.

Can Warnvo help with medical bills?

Yes. Warnvo's Medical Bill Analyzer identifies billing errors, upcoding, duplicate charges, and services never rendered. It generates a dispute letter referencing the specific billing codes and regulations that apply.

Warnvo — ShieldEngine™ Consumer Protection | Scan Bills & Fight Fraud

Scan Any Bill. Catch Junk Fees. Generate Dispute Letters Instantly.

Warnvo is the world's first AI consumer protection app. Snap a photo of any bill — hotel, medical, restaurant, contractor, auto repair — and Warnvo's AI analyzes every line item in seconds. It flags overcharges, junk fees, and illegal charges, then generates a ready-to-send dispute letter. Works in 95 languages across any country.

34 Specialized AI Tools for Consumer Protection

Hotel Bill Analyzer, Medical Bill Checker, Restaurant Receipt Scanner, Auto Repair Bill Analyzer, Contractor Bill Checker, Scam Detector, SMS Scam Detector, Phishing Email Detector, QR Code Scanner, Lease Analyzer, Bank Fee Analyzer, Insurance Claim Analyzer, Medicare Bill Checker, Paycheck Stub Analyzer, Credit Report Analyzer, Student Loan Analyzer, Gig Worker Fee Analyzer, HOA Fee Analyzer, Utility Bill Checker, Security Deposit Dispute, Prescription Price Checker, Timeshare Exit Advisor, Crypto Scam Detector, Dark Pattern Detector, Fake Job Offer Detector, Subscription Tracker, Negotiation Script Generator, Price Drop Tracker, Return Policy Analyzer, Warranty Tracker, Tip Fraud Detector, Delivery Scam Detector, Before You Sign Contract Analyzer, Junk Fee Calculator.

How Warnvo Works

Step 1: Take a photo of your bill or paste the text. Step 2: Warnvo's AI analyzes every line item against fair market rates and consumer protection law. Step 3: Get a full report flagging suspicious charges. Step 4: Download a ready-to-send dispute letter referencing the exact laws that protect you.

Works in Any Language, Any Country

Warnvo reads bills in Japanese, Spanish, French, German, Portuguese, Italian, Arabic, Thai, Chinese, Korean, and 85 more languages. Whether you're disputing a hotel fee in Tokyo, a restaurant charge in Rome, or a medical bill in the United States, Warnvo applies local market benchmarks and the consumer protection laws that apply to your situation.

Pricing

Free tier: 3 scans per day. Pro plan: $19.99/month or $149.99/year for unlimited scans and dispute letters. Family Shield: $14.99/month for up to 6 family members. Business plan available for teams.

Dispute Hotel Bills, Medical Bills, and More

Hotel junk fees — resort fees, destination fees, amenity fees — are among the most common consumer complaints. Warnvo's Hotel Bill Analyzer flags every suspicious charge and generates a dispute letter you can hand to the front desk or send to the hotel's billing department. Medical bill errors affect 1 in 5 patients. Warnvo's Medical Bill Checker identifies upcoding, duplicate charges, and services never rendered.

20+

Specialists

Consumer Protection Intelligence.

Built on FTC Rulings and Consumer Law.

95+

Languages

What Warnvo Does

Upload any bill, contract, or suspicious message. We find every violation, cite the exact law, and hand you a full analysis and next steps — in 60 seconds.

✦ ShieldEngine™ Live Analysis

MEDICAL BILLS

Maria got a $4,200 hospital bill.

ShieldEngine found 3 illegal charges.

She disputed $1,840.

No Surprises Act §2799B-2

Real situations. Real laws. Real results.

Built on federal consumer protection law

FTC Act §5FDCPA §1692No Surprises Act

Get your personal Warnvo scan address

Within 60 seconds ShieldEngine™ has read every line, flagged every problem, and drafted your dispute letter.

Bank-level privacy. Your bills are analyzed once against federal consumer protection law — and never stored on our servers.

Free to start · No credit card required

20+Specialist agents

95+Languages covered

40+Countries served

$0To start — no card needed

Sunny · Your Guide

Your guide to 20+ ShieldEngine™ specialists

MayaMedical Bills

MarcusDebt Collection

SamUtilities & HOA

JordanScam Detection

AlexPro Business

View all 20+ specialists →

Americans overpay $300 billion every year on bills they never question.

You finally have someone on your side.

We read your bills, catch what's wrong, cite the exact law, and draft your dispute letter — while you do nothing.

WHAT SHIELDENGINE™ ACTUALLY DOES

“It’s not just bills.”

ShieldEngine™ reads contracts before you sign them. Flags scams before you respond. Audits invoices before you pay. And when something’s wrong — it drafts a dispute letter citing the exact federal law that protects you. In 95 languages. Across 40+ countries. In about 60 seconds.

Every year, Americans lose billions to billing errors, hidden fees, and charges that violate federal law. Most never dispute a single one.

Your situation will be matched to the right specialist immediately.

Or forward any email directly to [email protected]

Not a law firm · Results are informational only · Not legal advice

WHY WARNVO IS DIFFERENT

"Other tools tell you it's a scam. We tell you it's illegal — and hand you the letter to prove it."

Forward any suspicious email to ShieldEngine™ and it analyzes it in seconds — telling you if it's a scam, which federal law it violates, and giving you a full breakdown of what’s wrong, which law it violates, and exactly what to do next. Not just a warning. A weapon.

→ Forward your bill or suspicious message:

✉[email protected]or scan directly →

✓Identifies the exact FTC, FDCPA, or FCC regulation being violated

✓Generates a legally-grounded dispute letter in 60 seconds

✓Works in 95 languages across 40+ countries

How It Works in 3 Steps

Step 01

Upload your bill

Photo, PDF, screenshot, email, or paste the text. Any bill. Any language.

Step 02

ShieldEngine™ analyzes every line

20+ specialized detection agents check for overcharges, violations, and scam patterns — in about 60 seconds.

Step 03

Dispute letter ready to send

Your letter cites the exact FTC, FDCPA, and CFPB rulings that protect you. Copy, send, or email it directly.

Scan your first bill free →

No credit card required

FOR CONSUMERS

Stop paying charges you never agreed to.

80% of medical bills contain at least one error. On bills over $10,000, the average overcharge is $1,300. Most go unchallenged because most people don't know what to look for.

The average American overpays $1,300+ per year on bills they never question. ShieldEngine™ reads every line of your medical bills, utility bills, debt notices, and repair invoices — and cites the exact federal law or regulation that protects you. No guessing. No jargon. Just answers.

Flags overcharges with cited statutes — not just "this looks wrong"
Covers medical, utility, debt, auto repair, HOA, restaurant, and 20+ more bill types
Full analysis and next steps ready in 60 seconds
Works in 95+ languages

Maya · Medical Bills Marcus · Debt Collection Sam · Home & Auto

+ 17 more specialists covering every bill type you face

For Consumers →Scan your first bill free →

FOR TRAVELERS

In 47 countries. 95 languages. ShieldEngine™ travels with you.

Hidden hotel fees are now federal violations under the FTC Junk Fees Rule — effective May 2025. Hotels face fines of $46,517 per violation. Most travelers still don't know they can dispute them.

Hotels add resort fees they never disclosed. Restaurants add gratuity twice. ATMs charge currency conversion fees that violate Regulation Z. ShieldEngine™ catches all of it — in any language, any currency, any country — and generates a dispute letter in the original language of the bill so you can hand it to the front desk on the spot.

Scan any bill in any language
Live currency conversion on every line item

Sofia · Currency & Travel Jordan · Scam Detection

Covering hotels, airlines, restaurants, currency exchange, and tour operators

For Travelers →Scan a foreign bill free →

✦ PRO BUSINESS

Your clients don't know what they signed. Now you do.

30% of insurance claims are denied on first submission. $262 billion is lost annually to billing errors and denied claims. Your clients are absorbing those costs — unless you catch them first.

Every contract has clauses your clients glossed over. Every invoice has charges they assumed were standard. ShieldEngine™ flags every one — citing the exact statute, regulation, or pricing benchmark it violates — so you can act before it costs them more.