Browser extension data
Tab URLs
While an active Fokasu focus session is enforcing website blocks, the extension reads tab URLs locally so it can compare them with your configured block and exception patterns. Matching pages are redirected to the extension's blocked page.
The extension does not send tab URLs, browsing history, page contents, titles, cookies, credentials, or form data to Fokasu's remote services. It does not build or retain a browsing-history database.
Local health heartbeat
When browser protection is enabled, the extension sends a small heartbeat to the Fokasu desktop app running on the same device. The heartbeat contains the browser family, whether an incognito or private window is active, whether the extension is allowed in that mode, the extension ID, and a timestamp.
This heartbeat is used only to confirm extension health and private
browsing coverage. It is sent to the local app over loopback at
127.0.0.1:27843, not to a public network service.
Blocking configuration
The desktop app sends your configured block and exception patterns, along with the current focus-session state, to the extension over the same local connection. The extension uses that configuration to create browser blocking rules. These patterns are your settings, not a record of the pages you visit.
How data is used and shared
Fokasu uses the information described above only to provide, maintain, and secure its focus-session website-blocking feature. We do not sell it, use it for personalized advertising, or share it with advertising platforms, data brokers, or unrelated third parties. The browser extension shares its heartbeat only with the user's Fokasu desktop app on the same device.
The extension's first-run consent choice is stored in local browser extension storage. Dynamic blocking rules may persist in the browser so protection can recover after a service-worker restart; those rules contain configured patterns, not visited-page history.
Incognito and private browsing
If you enable the extension's incognito or private-window access, Fokasu can enforce the same blocking rules in those windows. The extension does not save or transmit private tab URLs. It reports only the private-window coverage state in its local health heartbeat.
Your choices
On first run, you can decline the local browser connection instead of granting consent. You can later remove the extension, disable its incognito access, or stop using the Fokasu desktop application. Removing the extension removes its local extension storage and browser rules; configured block lists stored by the desktop app can be removed through the app's own settings or local data removal.
Changes and questions
We will update this page when Fokasu's data practices change. For privacy questions or support, use the support channel at fokasu.app.