Online auction tracking and price change notifications

AuctionMate is a browser extension that tracks prices, alerts you to changes, and keeps your watch lists tidy across marketplaces. It is a shopping assistant that changes the way you track online auctions.

Secure & private by design
  • Real-time price history and deltas
  • Instant change alerts and background checks
  • Minimal permissions, encrypted requests
Start using now See how it works

Key features of AuctionMate

Everything focused on clarity and control.

Price tracking

Unified price history with trend indicators across supported sites.

Alerts

Browser and push alerts when prices move, so you never miss a drop.

Notes & highlights

Attach notes, highlight locations or titles, and keep your own signals.

Exclusions

Hide clutter and resurface only the listings that matter.

Background checks

Scheduled checks keep data fresh even when you are away from the site.

How does the extension work? – See AuctionMate in action

Auction list view with presented price trends
Alerts panel for tracked auctions
Notes panel with dynamic links
Price chart showing recent trend
Watched auctions list
Supported Platforms – Platforms supported by AuctionMate. AuctionMate is not affiliated with or sponsored by any of these brands.

Trust and transparency

No third-party trackers or profiling — you stay in control.

Privacy-first

AuctionMate respects your privacy. The extension only analyzes information visible on the page and uses it solely to provide its features. To ensure maximum safety, it does not initialize on confidential pages, such as login, account, or order pages, and so on.

Minimal permissions

User-controlled features with minimal permissions; you can change or disable checks anytime.

No data manipulation

Transparent updates, no data manipulation. What you see is exactly what happens.

AuctionMate by the numbers

Measured across the live user base; refreshed frequently.

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Happy users
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Supported platforms
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Added price entries processed daily

Frequently asked questions

Which marketplaces does AuctionMate support?

AuctionMate supports a wide range of platforms, including: Amazon, eBay, OLX, Vinted, Allegro, Kleinanzeigen, AutoScout24, MediaMarkt, X-Kom, Otodom, Otomoto, Adresowo, Empik, Gumtree, Copart, and IAAI. This list is constantly being updated as we add support for more platforms.

Which browsers does AuctionMate web extension support?

AuctionMate currently works on: Google Chrome, Firefox, Brave, Opera, Edge and Vivaldi.

Is AuctionMate free to use?

The extension is completely free, but we encourage you to support the project with a voluntary donation.

How do I receive alerts about price changes?

Enable browser notifications to receive push alerts, or open the AuctionMate panel. We only notify you about changes in auctions you're watching.

How do I install AuctionMate extension?

Visit your browser's extension store and download AuctionMate! Once installed, just head over to any of the supported sites – AuctionMate will automatically spring into action and help you track the best deals.

Reviews

Feedback from users who rely on price accuracy and privacy (collected from Firefox, Chrome, and Edge web stores).

Michael
AuctionMate user on Google Chrome

Great idea, congratulations and best of luck!

Lukas
AuctionMate user on Firefox

The best extension for tracking changes on classifieds and marketplace sites!

Elizabeth
AuctionMate user on Google Chrome

Perfect for anyone who wants to stay organized and save time.

Do you have a question about tracking auction prices or how the tool works?

We love feature ideas and bug reports. Drop us a line and we will get back to you.

[email protected]

Support AuctionMate

Your support helps keep the project running and contributes to its further development.

Buy me a coffee Donate via PayPal

Ready to try AuctionMate?

Start using now

AuctionMate runs on desktop browsers only (Windows, macOS, Linux). Mobile browsers aren't supported.

AuctionMate Pro – Unlock Advanced Capabilities

Enhance your browsing with AuctionMate Pro and gain access to features designed for true bargain hunters:

Price Changes in Percentages

Clear percentage differences instead of simple arrows – for faster decision-making.

Seller Highlighting

Instant identification of trusted or prominent sellers.

Smart Auction Exclusion

Automatically filter listings based on your own defined rules and highlights.

Enhanced Auction Management

Easily filter and sort your watch list and excluded listings to quickly find what matters most.

Limited time offer

To thank all our users for the amazing feedback and love, we are giving away activation codes for 30 days of AuctionMate PRO for free!

AUCTIONMATE-PIONNIERS

Valid until the end of March