A focus blocker for people who want to use distracting apps and websites more intentionally.
one sec interrupts or blocks distracting apps, social media, and websites. You can schedule blocks, set time limits, and set an intention before opening an app.
Updated Nov 6, 2026
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It helps you interrupt or block social media, apps, and websites in a way that fits your habits (and doesn't work against them).
Not just symptoms. Our app is designed to change your habits – and free you from social media distractions in the long term.
Our interruptions are developed by top psychologists around the world – to help you use apps intentionally.
When you need absolute focus, you can block distracting apps to your schedule.
Yes! You can set up blocks so that configured apps or sites can't be opened at all during a block session or scheduled time—giving you full focus with zero distractions.
Set a time limit for your most addictive apps. one sec helps you to not get lost.
Replace bad habits with good ones: one sec can nudge you towards healthy behavior.
Set an intention for opening apps. By thinking ahead, you spend less time fooling around.
Check in with yourself to reflect how your app usage affects your state of mind.
All intervention logic runs locally on your device—there's no profiling, no data selling, and no investor pressure to push ads or analytics into the app.
With the same account, you can log in to different smartphones, tablets and computers and use them simultaneously.
It helps you interrupt or block social media, apps, and websites in a way that fits your habits (and doesn't work against them).
Our interruptions are developed by top psychologists around the world – to help you use apps intentionally.
Yes! With one sec's browser extension, you can set interventions for any website you like. By the way: There's an adult content filter to interrupt opening all kinds of adult websites.
Yes! You can set up blocks so that configured apps or sites can't be opened at all during a block session or scheduled time—giving you full focus with zero distractions.
With the same account, you can log in to different smartphones, tablets and computers and use them simultaneously.
It interrupts or blocks distracting apps, social media, and websites in ways that fit your habits.
Yes. Configured apps and sites cannot open during a block session or scheduled time.
Yes. You can use one account simultaneously on smartphones, tablets, and computers.
Yes. You can set time limits for your most addictive apps and schedule blocking for distracting apps when you need to focus.
Yes. Its browser extension can set interventions for any website, including an adult content filter.
Yes. You can check in to reflect on how app use affects your state of mind and write down your thoughts and feelings.
No written reviews yet. Be the first to share your experience.
Tried this tool? Share your experience.
