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Scroll Brake VS LeechBlock

Compare Scroll Brake VS LeechBlock and see what are their differences

Scroll Brake

Cognitive app & website blocker for iOS and Chrome that stops doomscrolling with adaptive math puzzles. Generous free tier (up to 3 limits for unlimited apps), 100% local privacy, optional one-time Lifetime Pro.

Rating
0 reviews
Pricing
Freemium $29 / One-off (Lifetime Pro Unlock (Free Forever tier included))
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LeechBlock

LeechBlock is an extension for Firefox and Chrome that allows users to block time-wasting sites.

Rating
0 reviews
Pricing
Open source
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DisplaySwitcher
Switch your monitor’s video input and seamlessly transfer text and files! A Linux/macOS/Windows Desktop Application. sponsored

Which is more popular?

Website Blocking Software popularity
100% vs 0%
alternatives listed
15 vs 221

Base details

Website, pricing, platforms and company facts side by side.

Scroll Brake
LeechBlock
Website novasynapse.com proginosko.com
Pricing
Freemium $29 / One-off (Lifetime Pro Unlock (Free Forever tier included)) Official pricing
Open source
Platforms
iOS Google Chrome
—
Company Startup from Estonia · 2026 —
Listed in
App Blockers Website Blocking Software Focus Personal Productivity Time Management Privacy-Focused +3
Time Management Productivity Time Tracking Focus +1

About Scroll Brake and LeechBlock

In their own words, as submitted to SaaSHub.

Scroll Brake
LeechBlock

Scroll Brake is a native iOS (Screen Time / FamilyControls API) and Chrome Extension app & website blocker that replaces passive countdown timers with active cognitive friction — requiring you to solve adaptive mental math challenges before distracting feeds open. Key Capabilities Cognitive...

Read more about Scroll Brake

No description of LeechBlock yet.

Features and specs

What each product offers, as listed by its team.

Scroll Brake 3 features
LeechBlock 5 features
  • Cognitive Math Friction
    Interrupts automatic doomscrolling with adaptive mental math challenges
  • Escalating Daily Difficulty
    Math difficulty increases automatically on repeat unlock attempts
  • 100% On-Device Privacy
    Zero cloud servers, zero accounts, and zero telemetry via Apple Screen Time API & Chrome MV3
  • Customizability
    LeechBlock allows users to customize the blocking rules according to their schedule and needs, including setting time limits, days, and hours for blocking specific websites.
  • Simple to Use
    The interface of LeechBlock is user-friendly, allowing even those who are not tech-savvy to easily set up and manage their block lists.
  • Multiple Blocking Options
    LeechBlock provides various blocking options including the ability to block websites based on keywords, domains, subdomains, and even wildcards, giving users extensive control over their browsing habits.
  • Productivity Focus
    The primary aim of LeechBlock is to enhance productivity by preventing access to distracting websites, which can help users stay focused on their work or study.
  • Free to Use
    LeechBlock is available for free, making it an accessible option for anyone looking to improve their online habits without financial barriers.

Possible disadvantages

  • Limited Browser Support
    LeechBlock is primarily available as a browser extension and its functionality can be limited depending on the browser used. It may not support all browsers or may have inconsistent performance across different browsers.
  • Dependency on Browser
    As a browser extension, LeechBlock only works within the browser in which it is installed. It does not block apps or other browsers, reducing its effectiveness if users switch browsers or use different devices.
  • Potential for Workarounds
    Users determined to bypass the restrictions may find ways to disable or circumvent LeechBlock, which can undermine its effectiveness in controlling browsing habits.
  • Lack of Advanced Features
    Compared to some paid or more comprehensive web-blocking software, LeechBlock may lack advanced features such as detailed usage reports, cross-device synchronization, or parental controls.
  • Learning Curve for Detailed Configuration
    While basic use is straightforward, configuring more complex rules and settings might require a bit of a learning curve, especially for users who want to take full advantage of its customizability.

Analysis

An editorial look at what each product does well and who it suits.

Scroll Brake
LeechBlock

No analysis of Scroll Brake yet.

Overall verdict

  • LeechBlock is generally considered a good tool for those looking to improve their productivity by managing and limiting their access to distracting websites. Its customizable features and straightforward interface make it effective for personal use.

Why this product is good

  • LeechBlock is a browser extension designed to help users block time-wasting sites. It is popular for its ease of use, flexibility in setting blocking schedules, and the ability to specify different blocking rules for different sites or groups of sites.

Recommended for

    LeechBlock is recommended for students, professionals, or anyone who finds themselves frequently distracted by social media, news websites, or other online content. It is particularly useful for those who need a simple solution to improve their focus and time management.

Category popularity

How often each product is chosen within a category, 0–100% relative to the other.

Score bands 0–20 21–40 41–50 51–60 61–100
Scroll Brake
LeechBlock
100% 100%
Website Blocking Software
0% 0%
0% 0%
Time Tracking
100% 100%
6% 6%
Time Management
94% 94%
100% 100%
Personal Productivity
0% 0%

Questions & Answers

As answered by people managing Scroll Brake and LeechBlock.

What's the story behind your product?

Scroll Brake's answer

We noticed that standard app blockers fail in two ways: strict hard blocks force users to delete the blocker during an urgent message, while passive 5-second delays become invisible to muscle memory. Escalating mental math creates the exact cognitive pause needed to close the app voluntarily.

Which are the primary technologies used for building your product?

Scroll Brake's answer

Native Swift, SwiftUI, Apple FamilyControls / ManagedSettings / DeviceActivity frameworks on iOS, and TypeScript / Manifest V3 for the Chrome Extension.

What makes your product unique?

Scroll Brake's answer

Instead of passive countdown timers or breathing animations that muscle memory learns to ignore within days, Scroll Brake uses active cognitive friction — requiring you to solve adaptive mental math puzzles (with escalating daily difficulty) before distracting apps or websites open.

Why should a person choose your product over its competitors?

Scroll Brake's answer

  • Cognitive System 2 Interruption: Arithmetic challenges break automatic dopamine scrolling loops.
  • 100% On-Device Privacy: Built on Apple Screen Time API (FamilyControls) and Chrome Manifest V3 with zero cloud servers and zero browsing logs.
  • No $99/Year Subscriptions: Generous Free Forever tier (up to 3 active limits covering unlimited apps) + optional $29.99 one-time Lifetime unlock.

How would you describe the primary audience of your product?

Scroll Brake's answer

Developers, students, founders, and knowledge workers with ADHD or high screen exposure who want to stop compulsive doomscrolling on iPhone and Chrome without surrendering their privacy or paying $100/year.

User comments

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Alternatives to Scroll Brake and LeechBlock

When comparing Scroll Brake and LeechBlock, you can also consider the following products.

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