Privacy Policy

Last updated: April 2026

Hidden Current is a browser extension made by wo.studio that estimates the energy and water used by your Claude conversations. This policy explains what data we handle and how.

We do not read your conversations.

Hidden Current measures the character length of Claude's responses to estimate resource usage. It never reads, stores, or transmits the content of your prompts or Claude's replies. No conversation text ever leaves your browser.

What we store locally.

Hidden Current stores estimated energy (Wh) and water (mL) figures in your browser's local storage. This data is organised into daily, weekly, and all-time totals, and a per-conversation record that is automatically deleted after 30 days. All data stays on your device.

What we do NOT collect.

  • No personal information
  • No conversation content
  • No usage analytics
  • No identifiers of any kind

We do not use third-party analytics, advertising, or tracking of any kind. No data is ever sent to any server.

Permissions.

Hidden Current requests access to storage to save your running totals locally. No other permissions are requested or required.

Changes.

If this policy changes materially, we'll update the date above and note it on hiddencurrent.co.

Contact.

Questions? Get in touch at support@workingon.studio