Product and variant signals
COMPR checks key identifiers and characteristics such as brand, model and variant details when available.
A clearer check before checkout
Check if this exact product is cheaper elsewhere.
Open COMPR on a product page, start one deliberate check, and get a result only when the product and important variant details match reliably.
Free public preview · No payment details · Chrome extension
Product interface — example
Same-product focusUser-started checksReliable matches onlyBuy from the retailer
The COMPR flow
Four steps. One considered decision.
COMPR stays out of the way until you choose to run a price check.
- 01
Open a product page
COMPR accepts a specific product page—not search, category, social-media or map pages.
- 02
Select “Find This Cheaper”
The check starts only after your conscious click or tap.
- 03
Review an honest outcome
See a sufficiently reliable match, or a clear no-match message when confidence is too low.
- 04
Continue to the retailer
You decide whether to open an offer. Confirm price and availability with that retailer.
Why COMPR
Accuracy matters more than filling the screen.
“No reliable match” is more useful than the wrong size, model or variant.
Nothing starts automatically
Opening a page is not a price check. External searching begins only when you ask for it.
A no-match is valid
Timeouts, provider errors, cached responses and no-match outcomes do not count as successful free checks.
The retailer completes the sale
COMPR does not sell products. You purchase from the external retailer under its terms.
The actual product
Built around the product page you are already viewing.
The COMPR interface keeps detected details visible so you can check the match before following an offer.
- No broad browsing-history permission
- Relevant page access only when needed
- No analytics, ad pixels or fingerprinting on this website
Platforms
Available direction and what comes next.
C
Chrome
COMPR for desktop Chrome
Open the existing Chrome Web Store listing to view current availability and installation details.
Coming soon
Safari for iPhone, iPad and Mac
In development. Xcode conversion, signing, TestFlight installation and physical-device testing are still ahead.
Clear comparison rules
Know what a result means.
Coverage may not include every retailer. Prices and stock can change. COMPR currently does not receive affiliate compensation, and paid placement is not used.
Read our comparison methodology →FAQ
Straight answers.
What does COMPR compare?
Specific products and important variant details visible on product pages. Search, category, social-media and map pages are not accepted.
Does COMPR always find the cheapest offer?
No. Coverage and retailer data vary. COMPR only shows offers that pass its matching checks; verify final price and availability.
When does COMPR access a product page?
It reads the active page when you open the extension. External searching starts only after you select “Find This Cheaper”.
Does COMPR sell the product?
No. COMPR is a comparison aid. Any purchase is made from the external retailer.
Is Safari available?
Not yet. Safari support is in development and has not completed conversion, signing, TestFlight or physical-device testing.
How can I get support?
Use the support page to report a problem or contact the beta operator.
How is my data handled?
The website has no analytics or ad trackers. See the Privacy Policy for extension data.
COMPR for Chrome
One more check before you buy.
Install the free public preview and decide with better context.