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

Free to Start

95+

Languages

Consumer Protection Intelligence.

Built on FTC Rulings and Consumer Law.

Bills. Contracts. Scam emails. Hotel folios. Threatening letters. Upload it, or just forward it to [email protected] — ShieldEngine™ reads it, cites the exact law, and hands you a dispute letter in about 60 seconds.

Scan Your First Bill Free →

No credit card required.

You finally have someone on your side.

SUNNY · YOUR GUIDE

Maya

Marcus

Jordan

Alex

Sam

Marco

Your guide to 20+ ShieldEngine™ specialists

[email protected]

Forward any bill, contract, or suspicious message

HOW IT WORKS

Analyzed in four steps.

Forward or upload.

Forward a bill, contract, or suspicious email to [email protected] — or upload a photo or PDF directly.

ShieldEngine™ reads every line.

The right specialist agent cross-references your document against consumer protection law and flags anything that looks wrong.

Plain-English findings.

You get a clear breakdown: what was flagged, why it matters, and what you can do about it. No legal jargon.

Send a dispute letter.

ShieldEngine™ drafts a professional, legally-grounded dispute letter you can send directly. Ready in minutes.

Right now, someone is overpaying. It might be you.

These are real violations ShieldEngine™ catches every day.

Every flag is grounded in federal and state consumer protection law.

LIVE FEED

ShieldEngine™ Active

MEDICALUpcoded office visit from Level 3 to Level 5+$287

HOTELUndisclosed resort fee added at checkout+$58

AUTO REPAIRLabor rate 42% above regional average+$320

CELL PHONEEarly termination fee violates FCC ruling+$175

CONTRACTORMaterial markup exceeds 15% statutory limit+$890

RESTAURANTAuto-gratuity applied to party of 4 (state requires 6+)+$42

INSURANCEDuplicate deductible applied to single claim+$500

LEASEPenalty clause violates state tenant protection act+$1,200

MEDICALFacility fee billed without prior written notice+$842

HOTELDynamic currency conversion surcharge not disclosed+$27

DENTALBundled procedure billed as separate line items+$435

UTILITYLate fee exceeds state-regulated maximum+$38

AUTO REPAIRDiagnostic fee not disclosed before service+$189

CONTRACTORUnlicensed work billed at licensed rate+$1,450

MEDICALBalance billing on in-network provider+$1,100

HOTELMinibar restocking charge with no usage+$35

CELL PHONEUndisclosed administrative recovery fee+$12

INSURANCEOut-of-network billed as in-network denial+$2,300

LEASESecurity deposit deduction without itemized receipt+$875

VETERINARYMedication markup 300% above wholesale cost+$67

MEDICALUpcoded office visit from Level 3 to Level 5+$287

HOTELUndisclosed resort fee added at checkout+$58

AUTO REPAIRLabor rate 42% above regional average+$320

CELL PHONEEarly termination fee violates FCC ruling+$175

CONTRACTORMaterial markup exceeds 15% statutory limit+$890

RESTAURANTAuto-gratuity applied to party of 4 (state requires 6+)+$42

INSURANCEDuplicate deductible applied to single claim+$500

LEASEPenalty clause violates state tenant protection act+$1,200

MEDICALFacility fee billed without prior written notice+$842

HOTELDynamic currency conversion surcharge not disclosed+$27

DENTALBundled procedure billed as separate line items+$435

UTILITYLate fee exceeds state-regulated maximum+$38

AUTO REPAIRDiagnostic fee not disclosed before service+$189

CONTRACTORUnlicensed work billed at licensed rate+$1,450

MEDICALBalance billing on in-network provider+$1,100

HOTELMinibar restocking charge with no usage+$35

CELL PHONEUndisclosed administrative recovery fee+$12

INSURANCEOut-of-network billed as in-network denial+$2,300

LEASESecurity deposit deduction without itemized receipt+$875

VETERINARYMedication markup 300% above wholesale cost+$67

$4,098 flagged so far today

80%

of medical bills contain at least one error

— AAFP / Medical Billing Advocates of America

$1,300

average overcharge on hospital bills over $10,000

— NerdWallet Health Study

47 sec

average ShieldEngine™ analysis time

Upload any bill or document — or just forward an email to [email protected] — and get a plain-english breakdown of what's wrong, what law covers it, and what to do next — in about 60 seconds.

Scan Your First Bill Free →📧 Forward a Bill to [email protected]

No credit card required. No account needed for your first scan.

NEW FEATURE

Got a letter you don't
know how to answer?

Landlord notice. Insurance denial. Debt collector. HOA fine. Forward it to [email protected] — ShieldEngine™ reads it, asks a few questions, and drafts your response citing the exact law that protects you.

Get ReplyShield™ →

STEP 01

Forward the letter.

Forward any letter or email to [email protected].

STEP 02

ShieldEngine reads it.

It identifies the claim type and the applicable law.

STEP 03

Your response arrives.

A professional, law-citing response — ready to send.

PRICING

Simple plans for every situation.

Start free. Upgrade only if you need more.

Free

✓3 bill scans per month
✓Basic ShieldEngine™ analysis
✓1 ReplyShield™ per month
✓Email forwarding to [email protected]
✓No credit card required

Family

$14.99/mo

✓Unlimited scans for the whole household
✓Up to 5 family members, one account
✓Full line-by-line breakdown + dispute letters
✓Unlimited ReplyShield™
✓All specialist agents

Forward it. We'll tell you what's wrong —
and what to do about it.