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Website Blocker

Decide ahead of time which sites belong in your focus sessions.

Loading your focus space…

Timer
Blocker
Stats
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Only the extension can block websites

Stop losing hours to distracting sites. Install NGUMU free.

NGUMU: Screen Time Control blocks the sites that pull you away, times your focus sessions and makes you take real breaks — right inside your browser. Setup takes under a minute.

Productivity booster
Privacy-friendly
Lightweight
Free to install

Add to Chrome — it's freeOne click from the Chrome Web Store

1. Click 2. Add to browser 3. Pin NGUMU and start a session

Available on

Google ChromeAdd to Chrome →
Microsoft EdgeGet for Edge →
Brave BrowserAdd to Brave →
Mozilla FirefoxAdd to Firefox →
OperaComing soon

Real website blockingBlocklists, allowlists and ready-made presets for social media, video and news — enforced during every focus session.
Proven focus rhythmsPomodoro, 52-17, 90-20, 20-20-20 or your own custom cycle.
Breaks you actually takeA blink warning before each break, then a full-screen break overlay that keeps you from sneaking back to work.
Progress you can seeFocus time, session counts and daily or weekly goals in a simple dashboard. Tab management keeps multitasking in check.

No account needed for core features. Your session data stays on your device.

Getting started

Your first NGUMU session, step by step

Read the illustrated guide

1Add NGUMU to your browser
Choose your browser above. In its store, select Add or Get, review the requested permissions, then confirm the installation.
2Pin and open NGUMU
Open your browser's Extensions menu and pin NGUMU to the toolbar if available. Click the alarm-clock icon to open the timer.
3Choose a mode and start
Choose Pomodoro 25/5 for a first session. Open Blocking, add distracting sites and apply your filters. Return to Timer and press Start.

Screenshots show the NGUMU extension. Labels may differ by browser and version; the website timer alone cannot block other tabs.

App

Focus Timer
Blocker
Stats
Settings
Blog

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