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Privacy Policy — Thrifle Chrome Extension

Effective date: July 11, 2026

This policy explains how the Thrifle — Buy or Wait?browser extension (the “Extension”) handles your information, in plain language. It is a supplement to, and part of, the main Thrifle Privacy Policy— where the Extension is silent on something (your rights, retention, legal bases, contact for data requests), the main policy governs. Where they differ about the Extension specifically, this page controls.

The short version:the Extension talks only to Thrifle’s own servers (api.thrifle.com). It contains nothird-party analytics, advertising, or tracking code, it does not sell or rent your data, and it never injects or hijacks affiliate links. It reads the web address of the product page you’re actively viewing so it can tell you whether to buy now or wait — and nothing more of your browsing.

What the Extension does (its single purpose)

Thrifle gives you an honest “buy now or wait” verdict on Amazon products: a price history, a drop forecast, a 0–100 Deal Score, and related deals and store return policies. That single purpose is the only thing your data is used for.

What information the Extension handles, and why

Everything below is sent only to Thrifle’s servers, and only to run a feature you use:

  • Sign-in details. When you sign in, your email or username and password are sent over an encrypted connection to Thrifle to authenticate you. The Extension does not store your password— it keeps only a login token on your device so you stay signed in. You can use one free price check without signing in at all.
  • The product you’re checking.When you open the Thrifle panel or click the “Buy or wait?” button, the web address (and Amazon product ID, the “ASIN”) of the product page you’re viewing is sent to Thrifle to return its verdict and price history. Thrifle therefore receives the identifiers of the products you actively check. It does notreceive a log of your general browsing — only the product page you’re looking at while the panel is open or when you press the button.
  • The price printed on the page.On Amazon product pages, while the on-page “Buy or wait?” button is enabled, the Extension also reports that product’s public facts — its ASIN, the price displayed on the page, the strike-through list price, and whether a coupon badge is shown — so Thrifle’s price history catches short flash sales for everyone. This report happens at most once per product page view and carries no information about you: no account, no cookies, no name — it is not tied to you even when you’re signed in. Turning the on-page button off in the Account tab turns this reporting off with it.
  • Price watches and alerts.If you tap “Watch for a drop” or set a price alert with your own target price, that product’s ID, title, image, current price and your chosen target are sent and saved to your account so Thrifle can notify you if the price falls.
  • Deal Radar keywords. If you turn on Deal Radar, the keywords you add are stored on your device and sent to Thrifle periodically to look for matching deals, which you receive as notifications. Deal Radar is off unless you enable it.
  • The store you’re on.On supported retailers, the site’s domain is used to fetch that store’s return policy. For this, the Extension reads the page’s addressonly; the single exception to “never the page’s contents” is the printed price on Amazon product pages, described above — nothing else on any page is read.

What’s stored on your device

Your login token, your Deal Radar keywords, a short list of already-seen deal notifications, and your preferences (theme, whether the on-page button and notifications are on) are kept locally in the browser’s extension storage. Signing out removes your token; uninstalling the Extension removes all of it.

Permissions, and exactly why each is needed

  • Access to the active tab & tabs— to read the web addressof the tab you’re viewing so the panel knows which product or store to check. Used only for that; never to read page contents or build a browsing history.
  • Scripting / host access to Amazon and listed retailers— to place the small “Buy or wait?” button next to the price on Amazon product pages, and to enable return-policy lookups on supported stores.
  • Storage— to save your login token and preferences on your device (see above).
  • Notifications— to alert you when a saved Deal Radar keyword matches a new deal. Only used if you enable Deal Radar.
  • Alarms— to schedule that periodic Deal Radar check in the background.
  • Side panel— to show Thrifle in Chrome’s docked side panel.

Who your information is shared with

Your information is sent to Thrifle’s own servers(api.thrifle.com) to run the features above, and to the standard infrastructure providers that host and secure that service. Thrifle’s servers obtain Amazon price history from a third-party price-history provider; we query that provider by product, and do not share your identity with them. The Extension itself sends data to no one but Thrifle. We do not sell, rent, or trade your personal information.

Chrome Web Store Limited Use commitment

Our use of information received through the Extension adheres to the Chrome Web Store User Data Policy, including its Limited Use requirements. Specifically: the data the Extension accesses is used only to provide and improve the single purpose above (the price verdict, watches, and deals you ask for); it is not sold or transferred to third parties except to provide that feature, to comply with the law, or as part of a merger with prior notice; it is not used for advertising, ad targeting, or credit/lending decisions; and no humans read your data except with your consent, for security, or as legally required.

Your choices & deleting your data

You can turn off the on-page button and notifications, or turn off Deal Radar, at any time in the Extension’s settings. Signing out clears your login token from the device; uninstalling removes all locally stored data. To delete the account and the watches/history tied to it on Thrifle’s servers, or to make a data-access or deletion request, follow the process in the main Thrifle Privacy Policy or email us (below).

Children

The Extension is not directed to children under 13 (or the minimum age in your country), and we do not knowingly collect their data.

Changes

If we materially change how the Extension handles data, we’ll update this page and its effective date, and where required, notify you in the Extension or by email.

Contact

Questions about this policy or the Extension? Email [email protected]. This Extension and policy are provided by Thrifle. See also the full Privacy Policy and Terms & Conditions.


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