VocaPin Privacy

Last updated: 10 November 2026.

VocaPin is a private tool for looking up English words, pinning them to a word list and reviewing them. Only a short list of invited Google accounts can sign in. It has no ads, no analytics and no tracking. Nothing is sold or shared for marketing.

What VocaPin stores

• Your Google account email address and your Google account ID, to know it is you.
• Your sign-in sessions. Only a scrambled form (a hash) of each session key is stored.
• The words you pin: the word, the meaning you chose, the sentence it was in, and the address (URL) and title of the page.
• Your review answers, the next review date of each word, your streak and your points.
• Short AI explanations and word audio files, kept so they do not have to be made again.

VocaPin does not read the pages you visit. It only reads the word you double-click and the sentence around it.

Who else sees some of it

• Google Translate gets the word you double-click, to show its meanings. Your browser sends it directly.
• dictionaryapi.dev gets the same word, to show how it is pronounced.
• Anthropic (the Claude AI) gets the word and its sentence when you press "Explain in this sentence".
• Microsoft Edge read-aloud gets the word, to make the audio you hear when you press listen.
• Google sign-in tells VocaPin your email address and Google account ID when you sign in.
• Cloudflare carries all traffic between your devices and the VocaPin server.

Where it is kept

On one home server run by the developer, together with that server's regular backups.

Cookies

One cookie that keeps you signed in, and one short-lived cookie used only during sign-in.

Deleting your data

You can delete words yourself on the Word list page. To delete your whole account and everything in it, ask the developer who invited you, or write to [email protected].

Contact

Questions about VocaPin or this page: [email protected].

Google data

The use of information received from Google APIs will adhere to the Chrome Web Store User Data Policy, including the Limited Use requirements.