
Opal.so
one sec
Freedom.to
Cold Turkey
LeechBlock
4rem Phone Lock
App Pause
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.

Cold Turkey
Freedom.to
FocusMe
Focus App
Forest App
LeechBlock
Stay Focused
V2 updates! - Custom time interval for distraction free mode - Ability to turn off ' always on' mode - Improved UI -- Self Control -- A simple app to keep you focused online by blocking sites that you spend way too much time on.

Which is more popular?
Based on our record, SelfControl seems to be more popular. It has been mentioned 79 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | novasynapse.com | selfcontrolapp.com |
| Pricing | ||
| Platforms | — | |
| Company | Startup from Estonia · 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


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...
No description of SelfControl yet.
What each product offers, as listed by its team.


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


No analysis of Scroll Brake yet.
Overall verdict
Why this product is good
Recommended for
SelfControl is ideal for students who need to concentrate on studying, remote workers who want to avoid procrastination, freelancers who require discipline in managing their time, and anyone who needs a simple solution to reduce digital distractions during focused work periods.
Walkthroughs and reviews on video.
No Scroll Brake videos yet. You could help us improve this page by suggesting one.
How to block websites that distract you ? Selfcontrol [Mac App review and tutorial]
More videos
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Scroll Brake and SelfControl.
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.
Scroll Brake's answer
Native Swift, SwiftUI, Apple FamilyControls / ManagedSettings / DeviceActivity frameworks on iOS, and TypeScript / Manifest V3 for the Chrome Extension.
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.
Scroll Brake's answer
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.
Share your experience with using Scroll Brake and SelfControl. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Tracking Scroll Brake since Oct 2026.
A combination of https://selfcontrolapp.com/ and Hammerspoon automation and you can lock yourself out of pretty much everything. - Source: Hacker News / 8 months ago
Happy to see it still exists, and free https://selfcontrolapp.com/. - Source: Hacker News / 9 months ago
I have found that a useful method for getting distractions off my work laptop has been https://selfcontrolapp.com/ (if you're on mac). - Source: Hacker News / about 1 year ago
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