Ranked by bypass resistance, schedules, time limits, platforms and price · Updated
The best website blocker for focus is one you cannot switch off in the moment you want to. System-level blockers like Ascension, Cold Turkey and FocusMe cover every browser and hold when locked, while extensions like LeechBlock NG, StayFocusd and BlockSite are free or cheap but come off in one click.

Details reflect each app as of September 2026. Notice something out of date? Tell us and we will fix it.
| Blocker | Bypass resistance | Schedules | Time limits | Platforms | Price |
|---|---|---|---|---|---|
| Ascension | Strong | Yes | Yes | Windows | $12.99/mo or $50 once |
| Cold Turkey | Strong | Pro | Pro | Windows, macOS | Free, Pro $45 once |
| FocusMe | Strong | Yes | Yes | Windows, macOS, Linux, Android | $15.95/mo, $119.40/yr, $449 once |
| Freedom | Medium | Premium | No | Windows, Mac, iOS, Android, Chromebook | Free plan, $8.99/mo, $39.99/yr |
| LeechBlock NG | Light | Yes | Yes | Chrome, Firefox, Edge, Brave, Opera, Vivaldi | Free |
| StayFocusd | Light | Yes | Yes | Chrome | Free to install |
| BlockSite | Light | Yes | No | Chrome, iOS, Android | Free plan, $3.99/mo yearly |
| RescueTime | Light | Focus Sessions | No | Windows, Mac, iOS, Android | Free Lite, $9/mo |
Platforms: Windows 10/11 (iOS in development)
Price: 15-day free trial, then $12.99/month or $50 one-time
Ascension is a powerful Windows application designed to improve digital habits and productivity. It blocks distracting content on the web and tracks your digital usage automatically to give insights on how one can improve. It is built to be hard to bypass once a block is locked.
Limitations: Windows only (iOS in development), no free version.
Best for: students and workers on Windows who want blocks that hold, a focus timer and reports on their time.
Platforms: Windows, macOS
Price: Free version, Pro $45 once
Cold Turkey Blocker is a computer application designed to stop distractions by blocking websites, desktop apps and even the whole computer. It is known for being very hard to bypass once a lock is active.
Limitations: no phone app, schedules and locks need Pro.
Best for: strict blocking for a one-time price.
Platforms: Windows, macOS, Linux, Android
Price: 14-day free trial, then $15.95/month, $119.40/year or $449 lifetime
FocusMe is a blocker designed to control time on websites and apps in detail. Plans combine schedules, daily allowances, launch limits and forced breaks.
Limitations: the most expensive option here, many settings to learn.
Best for: people who want fine control over time rather than simple blocks.
Platforms: Windows, Mac, iOS, Android, Chromebook
Price: Free plan, $8.99/month, $39.99/year, $199 lifetime (currently $99.50)
Freedom is a blocker designed to stop distractions on every device at once. One session blocks websites, apps or the entire internet on your phone and computer together.
Limitations: free sessions last up to 2 hours, scheduling and Locked Mode need Premium.
Best for: students whose phone distracts them as much as their laptop.
Platforms: Chrome, Firefox, Edge, Brave, Opera, Vivaldi
Price: Free
LeechBlock NG is a free browser extension designed to limit time on distracting websites. It blocks sites outright or caps how long you spend on them.
Limitations: one browser at a time, removable in one click.
Best for: a free and flexible blocker.
Platforms: Chrome
Price: Free to install
StayFocusd is a Chrome extension designed to limit time on distracting websites. It gives each site a daily allowance and blocks it once the time is used.
Limitations: Chrome only, removable like any extension.
Best for: Chrome users who want daily time limits.
Platforms: Chrome, iOS, Android
Price: Free plan, Premium $3.99/month billed yearly or $14.99/month
BlockSite is a blocker designed for simple site blocking in the browser and on phones. It has 1,000,000 users on the Chrome Web Store.
Limitations: extensions can be removed in one click, many features need Premium.
Best for: a simple blocker across browser and phone.
Platforms: Windows, Mac, iOS, Android
Price: Free Lite, Solo Focus $9/month or $84/year
RescueTime is a time tracker designed to show where your time goes, with Focus Sessions that block distracting sites. It records the apps and websites you use without a timer.
Limitations: blocking needs a paid plan, the free plan keeps two weeks of history.
Best for: people who want to measure their time first.
Study sessions: block social media, video and news sites for the length of each session with a timer lock, for example 2 hours.
Workday schedule: block the same sites every weekday from 9 AM to 5 PM, and leave evenings open.
Daily time limits: allow a set amount, such as 20 minutes of social media a day, then block it until tomorrow.
Pomodoro sessions: block distracting sites for the whole study period, then work in 25 minute sessions with 5 minute breaks. Keep the block on during breaks, so a break does not turn into an hour on YouTube.
Exam season: lock your blocks until the day after your last exam, so they cannot be changed on a bad night.
For Windows, Ascension or Cold Turkey, because a locked block holds for the whole session. For phone and laptop together, Freedom. For a free option, LeechBlock NG.
System-level blockers with locks: Ascension, Cold Turkey and FocusMe with Enforced stopping. Browser extensions are the easiest to bypass because they can be removed in one click.
Blocks you cannot override work better than reminders. In a randomised study of about 2,000 adults, limits that could not be immediately overridden reduced time on social media, browsers and YouTube by 22 minutes a day.
Yes. Ascension and FocusMe include a Pomodoro timer. With other blockers, run a separate timer alongside them.
LeechBlock NG. It is free, works in Chrome, Firefox, Edge and other browsers, and supports schedules and time limits.
An extension works inside one browser and can be removed in one click. A system-level blocker is installed on the computer, covers every browser and can be locked so it cannot be removed during a block.
Yes. Ascension, FocusMe, LeechBlock NG, StayFocusd and BlockSite support schedules, and Cold Turkey and Freedom support them on paid plans.
Available on Windows 10 & 11