Privacy Policy
Last updated: August 2026
TrialGuard is built to be private by default. The short version: your trial data never leaves your browser. There are no accounts, no analytics, no tracking, and no advertising.
What the extension stores
The trials you track (service name, end date, optional price, and the
page URL where the trial was detected), your dismissal choices, and your
license status are stored exclusively in Chrome's local storage
(chrome.storage.local) on your device. Uninstalling the
extension deletes this data.
What leaves your device
Exactly two kinds of network activity exist, and both can be audited in the source code:
- On-device OCR fetches. When a checkout-like page shows its trial terms only inside an image, the extension downloads that image from the site you are already visiting and processes it locally with an on-device OCR engine (Tesseract, bundled inside the extension). The image and the recognized text are never sent anywhere else.
- License validation (Pro only). When you activate a
Pro license key — and at most weekly thereafter — the extension contacts
api.lemonsqueezy.com(our payment provider, Lemon Squeezy) to validate the key. Only the key itself is transmitted.
What we never collect
- No browsing history, page content, or trial data is transmitted to us.
- No analytics, crash reports, cookies, or fingerprinting.
- No sale or sharing of any personal data — there is nothing to sell.
Payment data
Purchases are processed entirely by Lemon Squeezy as merchant of record. Your card details never touch the extension or our systems; Lemon Squeezy's own privacy policy applies to the checkout.
Extension permissions
- Read page content (all sites) — required to detect trial terms on any checkout page.
- Alarms, notifications — to remind you before a trial ends.
- Context menus — for the "Track a trial on this site" right-click action.
- Offscreen document — hosts the local OCR engine.
Contact
Questions: support@example.com