You spot a product on Amazon, the badge reads "Deal of the Day" and the price looks tempting, but is it actually cheaper than last week, or last month? Without a price history tool, you are essentially guessing. Keepa has long been the default answer, but it locks most useful data behind a paid subscription. If you want a free Keepa alternative with EU price history that covers France, Germany, Italy, Spain and the UK in a single view, Histozon is the extension built for that exact need. Install it once in Chrome and every Amazon product page instantly gains a price history chart, a cross-country price comparison and optional drop alerts, at zero cost.
What Histozon does on Amazon product pages
Histozon is a Chrome browser extension that overlays real price history data directly onto any Amazon product page you visit. The moment you land on a listing, the extension silently queries its price database and renders a chart showing how the price has moved over time, no manual searches, no copy-pasting ASINs into a separate website.
The core feature set available for free includes:
- Price history charts covering up to 90 days of historical data for the 13 Amazon stores (Amazon.de, .fr, .it, .es, .nl, .be, .pl, .se, plus UK, US, CA, AU, JP)
- Cross-country price table showing the current price of the same product on all 13 stores side by side, with currency conversion
- Price drop alerts triggered when a product crosses a target price you set
- All-time low and average price indicators displayed directly on the product page
- New and used price tracking so you can spot when third-party sellers undercut the main listing
Everything loads inline, without redirecting you to an external tool. For casual buyers and regular Amazon shoppers, this workflow is significantly faster than copy-pasting an ASIN into a Keepa alternative and reading a chart on a separate tab.
How price tracking works (data collection and chart rendering)
When you open an Amazon product page with Histozon active, the extension reads the ASIN from the URL and sends a lightweight request to the Histozon price database. That database is populated by continuous price monitoring: crawlers check Amazon prices across all 13 Amazon stores multiple times per day, storing each data point with a timestamp. The result is a time series that powers the charts you see.
Charts are rendered in real time inside the product page without reloading it. You can toggle between different time windows (7 days, 30 days, 90 days, 12 months, all-time) and switch between marketplaces using tabs at the top of the Histozon panel.
For price drop alerts, you set a target price threshold directly in the extension panel. Histozon stores that preference and checks it against incoming price data. When the product price drops below your threshold on any of the monitored stores, you receive a browser notification or an email alert depending on your settings.
Data latency is typically under 4 hours for popular products. Less popular ASINs may update every 12 to 24 hours, which is still more than sufficient for spotting seasonal price patterns and avoiding artificially inflated "sale" prices. See our dedicated page on how Amazon price history works for a deeper technical breakdown.
The cross-EU comparison feature (why it matters for European shoppers)
This is where Histozon genuinely goes beyond what Keepa and CamelCamelCamel offer by default. Both competitors were designed primarily around Amazon.com and added non-US marketplaces as secondary options. The cross-EU comparison in Histozon was built as a first-class feature from day one.
Here is a concrete example: a popular robot vacuum listed at 349 € on Amazon.fr might be priced at 289 € on Amazon.de at the same moment. After adding estimated cross-border shipping (typically 5 to 15 € for small electronics within the EU), buying on the German store can save you 45 to 55 €. Histozon surfaces this opportunity in a single table with currency conversion applied automatically, so you do not need to open five browser tabs and do mental maths.
The cross-country comparison covers:
- Germany, France, Italy, Spain, Netherlands, Belgium, Poland, Sweden, the 8 EU stores, duty-free within the Union
- United Kingdom, United States, Canada, Australia, Japan, 5 international stores, shown for reference (import fees may apply)
This matters especially for high-ticket items (appliances, tech, furniture) where a 10 to 15 % price gap between markets is common. Resellers and deal hunters who operate across borders use this feature daily. Read more on our Amazon cross-country price comparison guide.
How to use Histozon in 3 steps
Getting started takes less than two minutes:
- Step 1, Install the extension. Open the Chrome Web Store, search for "Histozon" and click Add to Chrome. The extension requires permission to read Amazon product pages, it does not access other websites or your browsing history outside Amazon domains.
- Step 2, Visit any Amazon product page. Navigate to any Amazon marketplace covered (FR, DE, IT, ES or UK). The Histozon panel appears automatically at the bottom or side of the product listing, depending on your display settings. No manual activation required.
- Step 3, Read the chart and act. Check the price history chart to see whether the current price is near its all-time low, its average, or an artificial high. Use the country tab to check if another EU Amazon store is cheaper. Set a target price alert if you are willing to wait for a drop.
The free tier has no daily limit on the number of products you can check. There is no account required to view price history charts and cross-country comparisons, you only need to create a free account if you want price drop alerts synced across devices.
Who uses Histozon (buyers, resellers, deal hunters)
The typical Histozon user falls into one of three profiles, each getting different value from the same tool:
- Everyday Amazon shoppers use price history to avoid buying during an artificial price spike. Amazon sellers routinely raise prices 30 to 80 % before a "sale" event like Prime Day or Black Friday, then apply a discount that lands back at the original price. A 12-month chart exposes this pattern in seconds.
- Resellers and arbitrage buyers use the cross-EU comparison to identify products significantly cheaper on one marketplace and resell them on another or locally. The combination of current price difference and historical price trend helps estimate whether a gap is temporary or structural.
- Deal community contributors use price drop alerts to be the first to spot and share genuine discounts. When a product crosses the all-time low threshold, Histozon fires a notification so you can share it on deal forums before the stock runs out.
Common product categories where Histozon adds the most value: consumer electronics, kitchen appliances, personal care devices, LEGO sets, sports equipment and gaming hardware, all categories where Amazon prices shift frequently and cross-market differences are large enough to justify the extra step.
Histozon vs Keepa (the real differences)
Keepa is the most complete Amazon price tracker available, but its freemium model has grown increasingly restrictive. As of 2026, Keepa's free tier shows price history charts but limits access to the most useful data layers (third-party sellers, sales rank history, coupon history) behind a subscription starting at roughly 15 € per month. The Keepa API, used by resellers at scale, costs significantly more.
Key differences when comparing to this Keepa alternative:
- Cost: Histozon is free for all core features. Keepa free tier is limited; full access requires a paid plan.
- EU cross-country comparison: Histozon shows all 13 Amazon stores in one panel. Keepa requires separate searches per marketplace.
- Installation friction: Histozon works inline on the product page. Keepa requires copying an ASIN to their website or using a browser button that redirects you.
- Data depth: Keepa stores longer historical data for very popular products (3+ years on some ASINs). Histozon currently covers 90 days, which is sufficient for the vast majority of buying decisions.
- Professional tools: Keepa's API and bulk ASIN lookup are superior for professional resellers running large catalogues. Histozon targets individual shoppers and small resellers.
Histozon vs CamelCamelCamel (workflow and EU coverage)
CamelCamelCamel (C3) is the oldest free Amazon price tracker and remains popular, but it was built around Amazon.com first. Its EU coverage exists but the interface requires you to leave the Amazon product page and paste an ASIN or URL into the C3 website, which interrupts the shopping workflow.
Compared to this CamelCamelCamel alternative:
- Inline vs external: Histozon displays data on the Amazon page itself. C3 is a separate website you navigate to.
- EU-first design: Histozon was designed for EU shoppers from the start. C3's primary focus remains Amazon.com.
- Cross-country comparison: Not available on C3 in a single view. Histozon shows all 13 stores simultaneously.
- Price alerts: Both tools offer alerts. C3's email alerts work well; Histozon adds browser push notifications without requiring an email address.
- Update frequency: Comparable at 4 to 12 hours depending on product popularity.
Pricing (Free tier vs Pro)
The free tier of Histozon covers everything a regular Amazon shopper needs: unlimited price history charts, cross-EU comparison on all 13 marketplaces, all-time low and average price indicators, and up to 10 active price drop alerts simultaneously.
The Pro tier, aimed at power users and resellers, adds:
- Unlimited simultaneous price drop alerts (vs 10 on free)
- Email + browser notifications combined
- Extended data export (CSV) for bulk ASIN analysis
- Priority data refresh (under 2 hours for tracked products)
- API access for developers integrating price data into their own tools
Pricing details and the current Pro plan rate are listed on the Histozon Pro vs Free comparison page. For casual shoppers, the free tier is permanent, no trial period or credit card required.
Privacy and what the extension does (and does not) collect
Histozon requests permission to read Amazon product pages in your browser. It does not read your order history, your Amazon account details, your search history or any pages outside Amazon's domains. The extension sends the ASIN of the product page you are currently viewing to the Histozon price database, that is the only outbound data transfer.
No personally identifiable information is collected on the free tier. If you create an account to sync price alerts, your email address is stored to send notifications, it is not shared with third parties or used for advertising. Full privacy policy details are published on the Histozon website. The extension source code is available for audit on request.
Frequently Asked Questions
Is Histozon really free with no hidden limits?
Yes. The core features, price history charts, cross-EU comparison across all 13 marketplaces, all-time low indicators and up to 10 active alerts, are permanently free with no trial period. You do not need to create an account to view price history. The Pro tier adds power-user features for resellers and heavy deal hunters, but it is entirely optional for everyday shoppers.
Which Amazon marketplaces does Histozon cover?
Histozon covers 13 Amazon stores: the 8 European marketplaces (Germany, France, Italy, Spain, the Netherlands, Belgium, Poland and Sweden) plus the UK, US, Canada, Australia and Japan. The cross-country comparison table shows the current price on all 13 stores simultaneously, with automatic currency conversion. Within the EU there are no customs; for the non-EU stores, factor in import fees.
How far back does the price history go?
Histozon stores up to 90 days of price history for tracked products. For popular ASINs with high tracking demand, data goes back to when the product was first added to the database. Less popular products may have shorter history if they were added to the tracking system more recently. 90 days of data is sufficient to identify seasonal price patterns, Black Friday baselines and artificial pre-sale price inflation.
Does Histozon work on Firefox or other browsers?
The current version is a Chrome extension compatible with all Chromium-based browsers including Google Chrome, Microsoft Edge, Brave and Opera. A Firefox version is on the public roadmap. If you use Firefox, you can still use the Histozon web interface by manually entering an ASIN or Amazon product URL, though the inline-on-page experience requires the Chrome extension.
How is Histozon different from Keepa for EU shoppers specifically?
The main practical difference for EU shoppers is the cross-country comparison feature and the free access tier. Keepa requires a paid subscription to unlock most of its advanced data layers, and switching between EU marketplaces in Keepa requires separate searches. Histozon shows all 13 Amazon stores in a single panel with currency conversion applied automatically, without any subscription. For EU-focused shopping, this workflow difference is significant.
Can I use Histozon for Amazon.com (United States)?
Yes. Amazon.com (US) is one of the 13 stores Histozon compares, alongside Canada, Australia, Japan and the UK. Bear in mind that buying from a non-EU store can add import duties and VAT, so check the final delivered price, Histozon shows the converted store price to help you compare.