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Locked Means Locked. Mirrors macOS Screen Time web restrictions into Chrome and enforces them at the browser level. Titanium makes Chrome respect the rules you set in macOS Screen Time. Apple's Screen Time can block websites in Safari — but Chrome ignores it. Titanium closes that gap. Locked Means Locked. Chrome doesn't get a vote. WHAT IT DOES • Mirrors your macOS Screen Time configuration into Chrome in real time. Add a site to Screen Time's Restricted list, and Chrome blocks it within seconds. • Enforces Screen Time's "Limit Adult Websites" mode in Chrome using a curated, frequently updated blocklist of ~150,000 known adult-content domains across five static rulesets. • Honors Screen Time App Limits applied to websites. Set a 60-minute daily quota on YouTube and Titanium tracks per-second usage while the tab is focused, blocks the site when the quota is hit, and resets at local midnight. • Branded block page tells you why a site was blocked: Screen Time, time quota, allowlist mode, or adult-content filter. • Force-redirects already-open tabs when a site becomes blocked mid-session. No "but the site was already loaded" loophole. WHY YOU CAN'T BYPASS YOURSELF For self-restraint and accountability use cases, Titanium ships with two layers of friction designed to keep you honest: • PIN gating. Toggling notifications, granting temporary unblocks, or changing rules requires a PIN. Five wrong attempts triggers a 5-minute lockout. • Recovery via authenticator app (TOTP) or Mac admin password. Hand the QR code to a spouse or accountability partner — when "I forgot my PIN" needs to be invoked, you'll need them. The PIN cannot be wiped without authenticated recovery. PRIVACY Titanium runs entirely on your device. Nothing is transmitted to us or to any third party. We have no servers, no analytics, no telemetry. Your PIN, your recovery secret, your time-quota counters, your Screen Time configuration — all stored locally in Chrome's per-extension storage. REQUIRES TITANIUM COMPANION FOR macOS Titanium needs a small companion app installed on your Mac to read Screen Time configuration. Get the installer at gettitanium.app. THE ADULT-CONTENT BLOCKLIST IS NOT APPLE'S Apple's "Limit Adult Websites" uses a private classifier inside WebKit. Chrome cannot access it. Titanium ships its own curated blocklist sourced from the StevenBlack hosts list, the Block-List-Project, and HageZi DNS Blocklists Pro, all licensed for redistribution. Coverage is approximately 150,000 of the most-popular adult-content domains. Brand-new sites or extreme long-tail mirrors may slip through. OPEN ABOUT WHAT THIS CAN AND CAN'T DO Titanium prevents bypass within Chrome on the Mac it's installed on. It does not prevent the user from launching a different browser (Safari, Firefox, Edge). It does not encrypt your traffic, hide your browsing, or send reports anywhere. For full Mac-wide enforcement we recommend installing the Titanium configuration profile from the companion installer, which locks down Chrome at the OS policy level. Built for people who mean it.