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

one sec
Opal.so
AppBlock
Freedom.to
Cold Turkey
4rem Phone Lock
Focus App
Beat doom-scrolling BEFORE you open any distracting apps

Which is more popular?
Website, pricing, platforms and company facts side by side.
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| Website | novasynapse.com | unrushedapps.com |
| Pricing | ||
| Platforms | ||
| Company | Startup from Estonia · 2026 | Startup from the United Kingdom · 1 - 9 employees · 2025 |
| 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...
App Pause helps you beat mindless scrolling and reduce screen time by adding a short delay when you open apps. This simple pause creates a moment for you to reconsider your action, breaking the cycle of digital addiction and helping you use your phone with intention. Regain focus and build...
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
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Scroll Brake and App Pause.
App Pause's answer:
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.
App Pause's answer:
Android only, so it can leverage platform specific advantages. For example, the Pause Screen can show you your app usage right on the screen. Highly customizable.
Scroll Brake's answer
App Pause's answer:
Some of my competitors don't allow you to monitor multiple apps without paying. App Pause is completely free. The app isn't feature rich as others, but I am constantly updating it. If you want to see a particular feature added, please send me feedback. Thanks.
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.
App Pause's answer:
People who want to be more intentional and mindful about phone usage. In this modern era where everything is trying to grab our attention, our attention is the commodity that we need to protect aggressively.
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.
App Pause's answer:
My life felt rushed and stressed. I realised the high speed of everyday life was inducing stress, so I wanted to slow down. I implemented various methods to slow down in life, but struggled to slow down with Phone Usage. That's when I got the idea of an app that will slow down my phone usage by adding a delay in every app launch.
Scroll Brake's answer
Native Swift, SwiftUI, Apple FamilyControls / ManagedSettings / DeviceActivity frameworks on iOS, and TypeScript / Manifest V3 for the Chrome Extension.
App Pause's answer:
It's an Android App. I am using:
Share your experience with using Scroll Brake and App Pause. For example, how are they different and which one is better?
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