• Safari — extension ships with the app. Enable it in Safari → Settings → Extensions.
• Chrome — extension available on the Chrome Web Store. Search "FocusDragon" or check the Extensions page in the app for the link.
• Edge, Brave, Arc, Opera — can install the Chrome extension from the Chrome Web Store.
• Firefox — extension available on Firefox Add-ons (addons.mozilla.org). Search "FocusDragon" or install from the link in the app.