Your data, clearly explained

When you visit a web page with LearnJargon active, the browser extension scans visible text nodes in the page body — the words you actually see on screen. Specifically:

• Paragraph text, headings, and list items
• Article and main content elements
• Time-on-page estimates (for reading speed calculation)
• Hover events you trigger on substituted words

Text scanning happens entirely within your browser. Raw page text is never transmitted to our servers in bulk.

The extension explicitly excludes the following from any processing:

• Form inputs — text fields, text areas, and search boxes are skipped entirely
• Passwords — password inputs are never touched
• Financial data — pages on banking and financial domains are auto-excluded
• Medical portals — health portal domains are excluded by default
• Email clients — Gmail, Outlook, and similar apps are excluded
• Browser history — we do not access your browsing history

Our servers store the following data associated with your account:

• Vocabulary progress — which words have been substituted, how often you hovered, acquisition status
• Session statistics — domain visited (e.g. "nytimes.com"), number of substitutions, reading duration, WPM estimate
• Account information — your name, email address, hashed password, plan status
• Billing records — managed by Stripe (we never see your raw card numbers)

We do not store the text of pages you visit, the titles of articles you read, or your search queries.

You can delete your data at any time in two ways:

• Account deletion button in Dashboard → Settings. This permanently deletes your account, all vocabulary data, and all session history within 30 days.
• Email us at privacy@learnjargon.com and we'll process your deletion request within 14 business days.

After deletion, no personal data is retained on our servers. Anonymised aggregate statistics (e.g., "Spanish is our most popular language") may be retained indefinitely.

We use a small number of third-party services:

• Anthropic Claude — used to generate word substitution lists and translations. We send individual word pairs (e.g., "cat → gato") but not your personal data or page content. Claude does not use this data for model training per our enterprise agreement.
• Stripe — handles all payment processing. We pass your email and billing address to Stripe; your card data never touches our servers.
• Hetzner Cloud — our hosting provider. Servers are located in EU data centres (Germany).

If you are in the European Economic Area, you have the following rights under GDPR:

• Right of access — request a copy of all personal data we hold about you
• Right to rectification — correct inaccurate data
• Right to erasure ("right to be forgotten") — delete your data at any time
• Right to data portability — receive your data in a machine-readable format
• Right to object — object to data processing in certain circumstances

To exercise any of these rights, email privacy@learnjargon.com. We aim to respond within 14 days.

We use a single session cookie to keep you logged in. We do not use advertising cookies, tracking pixels, or any third-party analytics that send data outside our infrastructure. No cookie consent banner is needed because we use only strictly-necessary cookies.

We may update this policy as the product evolves. Significant changes will be notified by email and displayed prominently in the dashboard. The "last updated" date at the top of this page always reflects the most recent version.