PriceZen Community

The short version

• What you get. Open the extension on a product page and see what PriceZen knows about it: the usual price, the price over the last 90 days, and what other stores charge.
• What it sends. On product pages of the supported stores only: the offer the page shows you, the page's address trimmed to the product, and the product details and reviews the store publishes, with people's names and contact details removed.
• What it never sends. Your name, account, cookies, cart, searches, what you type or click, or anything from other websites or private windows.
• Your choices. Nothing is sent until you agree on the welcome screen. Two optional extras, shopping context and device info, stay off unless you tick them. You can pause, stop, see every capture, or delete your data at any time.
• Where it goes. Our own servers in Finland. We don't sell it, don't use it for advertising, and don't send it to any analytics provider.

Why we built it

Our own price checks are slow, and some stores go days between them. When you open a product page, you already see exactly what the store shows a real shopper. Sharing that keeps PriceZen's prices fresh for everyone, helps us catch fake deals and stores that try to game our recommendations, and shows us products we are missing.

Install

You need an invite from PriceZen. The extension does nothing until you paste it on the welcome screen and press "I agree".

Then, shop as usual

1. Read the welcome screen and paste your invite. The invite identifies you as a member. It is not a password and gives no access to your accounts anywhere.
2. Open product pages on supported stores. The extension shares the offer on that page. It stays quiet everywhere else.
3. Click the extension icon on a product page to see its usual price, its price history and other stores.

Supported stores

The extension works on product pages of these stores only. It never reads search results, cart, checkout, sign-in, account or order pages, even on these sites.

We add stores over time. A new store is a change-log entry here and a line in the extension's settings; it doesn't reopen the welcome screen. We ask you again only before collecting a new kind of data or using it for something new.

What it shares

Each time you open a product page on a supported store, the extension prepares one "capture" and sends it to PriceZen. Here is what a capture holds.

Why the member, coupon and subscription flags are always sent

A member price, a coupon price or a subscription price is a price only some shoppers get. The flags let us keep those prices out of what we publish as the price for everyone. They say what kind of price the page showed, not who you are, and nothing about your memberships is stored beyond that yes or no.

What our server sees

Like any website, our server sees your IP address and browser type when a capture arrives. Both are kept for 14 days and then erased everywhere, including our incoming log. The first part of the IP address (the network prefix) stays with the capture, so one person can't pose as many members.

When you open the extension on a product page

Clicking the extension icon on a product page asks PriceZen what it knows about that product, so it can show you the usual price, the price history and other stores. That request carries the trimmed address and your invite, happens only when you open the extension (also while capturing is paused or off), and is not recorded: we answer it and don't keep which product you looked up.

What we do with it

1. Fresh prices. A capture that matches an offer we track becomes a price check for that offer. A member who is already on the page sees exactly what a real shopper sees, and the check costs nothing.
2. Catching fake readings and stores gaming our recommendations. Members' readings are compared with each other and with our own checks. Every membership has a trust level: a new member's reading is published only once another member or one of our checks agrees; readings that keep agreeing earn trust, and readings that look made up can lose it. Only readings seen without a member, coupon or subscription price are compared, so you are never penalized for seeing a price other shoppers don't.
3. Finding products we don't track. When you capture a product we don't know, its title and the store's product details decide whether it is a kind of product we cover. If so, its trimmed address is queued for our own crawler. The queue entry doesn't say who saw the product.
4. Review summaries. Reviews on the product pages of trusted members, with personal details removed, are added to the store reviews PriceZen reads itself, for review summaries and the mood of reviews over time. They are stored without your member id.
5. The price study. With the two opt-ins only, we study questions such as "does the same TV cost more when you are signed in" or "do mobile shoppers see different prices". Findings are published only as totals, averages and percentages that never identify a member.
6. Running the program. Checking your invite, applying daily limits, showing you your recent captures, answering your requests, and contacting you about the program at the address on your membership record.

We don't use this data for advertising, don't sell it, and don't combine it with data about you from other companies.

You stay in control

• Pause for an hour or a day, or turn capturing off, from the extension's popup or settings. Nothing is sent while paused or off.
• Change either opt-in whenever you like. Captures are then sent without it.
• See your recent captures exactly as they were sent, in the popup.
• Delete your data from the extension's settings. Capturing turns off, and an email to us opens with your install id and member id filled in, so we can find your captures.
• Uninstall at any time. That stops all collection but doesn't by itself delete what was already sent, so choose "Delete my data" first, or write to us.

On Firefox, the two opt-ins also appear under "Permissions and data" in the add-ons manager, where you can withdraw them.

Where your data lives, and for how long

Community data is stored on our servers in Finland, run by Hetzner, our hosting provider, for every member wherever they live. Hetzner handles it on our behalf under a contract and may not use it for its own purposes. If that ever changes, we'll update this page and our privacy policy first.

It is not sent to PostHog or any other analytics provider, and we don't sell it or use it for advertising. Inside PriceZen, administrators look at a member's captures only to review abuse and trust, and every time one of us opens a member's captures, invites or membership record, or changes them, that access is logged and the log kept for 2 years.

If PriceZen is ever sold or merged, data from the extension moves to the new owner only with your explicit consent, asked for before the transfer. Without it, your data is deleted. If we ever share data outside PriceZen, for example an aggregated report for a store, member and install ids are replaced by a one-way hashed id and nothing that names or contacts you is included. Research findings are published only as aggregates.

Why 180 days: trust levels need at least 30 days of history to be earned, and the price study needs enough readings of the same offer in different situations to compare.

Your requests

Write to privacy@pricezen.com for a copy of your data, a correction, or its deletion, to withdraw your consent, or to object to a use. We answer within 30 days. To find your captures we ask for your install id and member id, both shown in the extension's settings, and nothing more. You can also complain to the privacy regulator where you live. The rights in our privacy policy apply to this data too.

Not for children

PriceZen Community is not directed to children and has nothing in it for them: members are invited personally, by name. If you believe a child has been given an invite, write to privacy@pricezen.com and we will delete the member and everything stored about them.

Member terms

Last updated November 7, 2026.

These terms are between you and Ammori Solutions, the business based in Canada that runs PriceZen ("PriceZen" or "we" below).

1. Invitation only. PriceZen Community is a program for people PriceZen invites personally. An invite is for you alone; please don't share it. PriceZen can withdraw an invite or end a membership at any time, with or without a reason.
2. No payment, either way. Membership is free, and members are not paid or rewarded for the prices they share.
3. What you agree to. You use the store sites as you normally would. You don't change, invent or automate readings (no scripts, bots or tools that open pages for the extension), and you don't use more than one invite.
4. Trust levels. New members' readings are published only when another source agrees. Readings that keep agreeing with other sources earn a higher trust level; readings that look made up can lower it or block the membership. PriceZen decides trust levels.
5. What PriceZen does with readings. Prices, availability and product details you share, and reviews the store shows on the page, may be published on PriceZen.com as part of its price information, and used in aggregate findings that never identify you. This page and our privacy policy describe all uses.
6. Leaving. You can pause or turn off capturing at any time, uninstall the extension, and ask us to delete your data from the extension's settings or at privacy@pricezen.com.
7. No warranty. The extension and the program are provided as they are, while PriceZen runs them, and PriceZen may change or end them. To the extent the law allows, PriceZen is not liable for losses from using them.
8. Changes. We may update these terms; the date above changes, and a change that affects what you agreed to is shown in the extension first.
9. Contact. privacy@pricezen.com or the contact form on PriceZen.com.

Help

How do I get an invite?

We're starting with our team, friends and family, so there's no public sign-up yet.

Why isn't it capturing anything?

Open the extension and check its status. It only works on product pages of the stores above, and only after you've agreed on the welcome screen and added a valid invite. It doesn't run in private windows, and it stays quiet on search, cart, account and checkout pages.

Firefox asked me about data collection when I installed it. What is that?

Firefox 140 and newer show their own summary of what an extension collects before it is added. Ours lists browsing activity (the product pages), website content (the offer and product details) and personally identifying information (the install id and member id), with the two opt-ins as optional. Accepting lets the extension run; our own welcome screen still asks before anything is sent.

How do I delete my data?

Choose "Delete my data" in the extension's settings, or email privacy@pricezen.com with the install id and member id shown there. We answer within 30 days.

Anything else?

Reach us through our contact form, and read our privacy policy, which has a section on the extension.

Changes to this page

We ask you to agree again in the extension before it sends a new kind of data or we use your data for something new. Everything else, including new stores, is recorded here.

• November 7, 2026: first published, with the thirteen stores listed above.