One Sec I Screen Time Focus App
One Sec adds friction to apps you want to use less.
At a glance
Starts at
From $19 per month for Pro
Price as published by the vendor, September 2026.
Free tier
No
Platforms
iPhone, iPad, Mac
Best for
People with ADHD, heavy social media users
Not for
Heavy screen time blockers
3.9 out of 5
Scored by a Toolio reviewer after real useOur verdict
One Sec uses psychological tactics to reduce screen time. It suits those who need long-term solutions for tech addiction but can be too subtle for some.
✓What it does well
Breaks habitsDelays access instead of blocking completely, making it psychologically effective.
Offers customizationCan set up with any app you want to reduce usage.
Scientific evidenceBacked by research from the Max-Planck Institute and German/Danish government.
✕Where it falls short
Limited intervention optionsOnly has a set time limit to return after getting stuck scrolling.
No app blocking timerCanât block apps during specific times manually like Screen Time can.
Additional in-app purchasePro version costs extra for more than one app usage.
Key features
Friction mechanismUses a deep breath animation to delay access.
Research-backedSupported by scientific evidence from multiple institutions.
Long-term solutionAims to solve screen time issues sustainably over time.
detailed interventionoffers more nuanced re-intervention