Don't buy blind. Get a verified expert inspection first.
Book a pre-purchase diagnostic for your car, property, luxury watch, and more.
Simple process
How it works
Get a professional diagnostic in three simple steps.
Find your expert
Browse verified diagnosticians by category, location, and rating. Read verified reviews from real buyers.
Book & pay securely
Choose a time slot and pay through our secure platform. Your payment is held in escrow until the job is done.
Get your report
Receive a detailed written diagnostic with a clear buy, negotiate, or avoid recommendation.
Buyer stories
What buyers say
โThe expert spotted a hidden engine issue that would have cost me โฌ8,000 to fix. Worth every cent of the diagnostic fee.โ
Marie L.
Porsche 911 โ Paris
โHe saved me from a property with serious hidden water damage. The Diagly inspection paid for itself more than ten times over.โ
Thomas B.
Apartment โ Lyon
โI was about to pay โฌ12,000 for a fake Rolex Daytona. The expert identified it in minutes. I still can't believe it.โ
Sarah K.
Rolex Daytona โ Geneva
Resources
Buyer's Guides
Expert advice to help you buy smarter.
5 Red Flags to Spot Before Buying a Used Car
Buying a used car can be a smart financial decision โ or a costly mistake. Here are the warning signs every buyer should know before signing anything.
Read guideHow to Avoid Fake Luxury Watches: A Buyer's Guide
Counterfeit luxury watches are more convincing than ever. Learn what experts look for and why professional authentication is essential before any significant purchase.
Read guideWhat to Check Before Buying a Property
A property purchase is the most significant financial decision most people make. Here is a systematic checklist of what to inspect โ and why a professional surveyor is essential.
Read guideAre you an expert in your field?
Join our network of verified diagnosticians. Set your own rates, work flexibly, and help buyers make confident decisions.
Apply as a Diagnostician