Tempo — Site Timer & Blocker

Tempo tracks how much time you spend on the sites you choose, and blocks you once you've hit the limit you set — entirely on your device. No account, no server, no analytics, nothing ever leaves your computer. HOW IT WORKS - Add a site and set a daily limit and a per-session limit. - A quiet banner warns you a few minutes before time's up. - When you hit the limit, a full-page overlay blocks the site — with scroll-lock and DOM-removal resistance, so closing the banner or inspecting the page doesn't get you past it. The check runs at document_start, so it also survives a page reload. - Need a few more minutes? Grant yourself extra time, capped at a number of grants per day you control — it widens today's budget without erasing your real usage history. FEATURES - Daily and per-session limits, set independently for each site - One-click presets for common distractions (social media, video) - Warning banner before a limit hits, full block after - Daily streaks for staying under your limits - Weekly usage digest comparing this week to last - Usage chart and per-site stats in the Options page - English and Vietnamese UI, switchable anytime - Zero data collection — everything stays in chrome.storage.local Uninstalling the extension deletes all locally stored data with it — there's nothing left on a server, because there is no server.