NoorI vs. BlockSite and Cold Turkey Blocker: Which Website Blocker Should You Use?

What people are usually looking for

Searches for a "website blocker," "app blocker," or "block distracting websites" tool usually come from one of two places: a parent wanting to block adult content or limit screen time for a child, or an adult trying to block social media, YouTube, or other distracting sites for themselves during work hours. Tools like BlockSite and Cold Turkey Blocker are popular answers — browser extensions and desktop apps that let you block a list of sites, set time limits, and schedule breaks from your computer.

How app-based blockers like BlockSite and Cold Turkey work

These are genuinely useful tools, and worth being fair about. BlockSite runs as a browser extension (with device-level apps too) that blocks a list of sites or apps you choose, with scheduling and a "focus mode." Cold Turkey Blocker runs on your computer and adds a locking mechanism — once a block is active, it is deliberately difficult to turn off early, which is the whole point for a lot of people trying to break a habit.

The structural limit both share

Because the blocking logic lives inside software running on the same device you're trying to restrict, it's bounded by whatever that device lets you do to it. A browser extension only covers that browser — a different browser, an incognito window some extensions don't run in, or a phone's native apps can all fall outside its reach. A desktop lock can usually be defeated by booting into safe mode, using a different user account, or a factory reset, even when the app itself tries hard to prevent early unlocking.

How NoorI approaches the same problem

NoorI blocks at the DNS level instead of inside an app — every device, every browser, every app on that device gets the same rule, because the check happens before a connection is made, not inside one specific piece of software. See how DNS-level filtering works for the mechanics. This also means content-filtering rules aren't tied to a single browser extension that a new browser or a private window can simply not have installed.

Where each approach fits

Website and app blocking: both approaches cover this — NoorI by category, app, or exact domain; BlockSite and Cold Turkey by a manually maintained block list.

Scheduling and breaks: both support time windows — NoorI schedules rules per policy (see scheduling internet access); Cold Turkey's scheduled "frozen turkey" locks work similarly for a single device.

Coverage across devices and apps: NoorI applies the same rule to every enrolled device and every app on it at once, since it isn't browser- or app-specific. App-based blockers generally need separate setup per browser or per device.

Family/multi-profile management: NoorI's Family plan gives each child their own rules and activity log from one dashboard — see setting up per-child rules.

Self-control / focus use: if you just want a quick, single-browser lockout with no setup, a lightweight extension can be enough — see our own take on this in blocking distracting sites during work hours.

Which one should you actually use?

If you want something installed in thirty seconds to block a handful of sites in one browser, an extension-based blocker is a reasonable, lightweight choice — that's a real use case NoorI isn't trying to win by being more complicated than it needs to be. If you're protecting a household with kids across multiple devices, want rules that hold up outside a single browser, or want a shared family dashboard instead of configuring each device separately, that's the gap NoorI is built for. Start with our 5-minute quick start if that sounds like your situation.