Comparison

ScreenZen vs one sec on Android, and the best free alternatives

ScreenZen and one sec popularized a simple idea: instead of blocking an app outright, make it wait a moment before it opens. That pause is often enough to break the autopilot tap. Both apps are well rated and widely used, and if you're here you're probably deciding between them, or looking for something similar that fits you better.

This guide compares the two honestly, then covers the alternatives worth trying on Android, including ReClaim, the free launcher we make. Facts were checked on Google Play (US), screenzen.co and one-sec.app in October 2026.

The short version

  • ScreenZen is free and donation-supported, and it's the most configurable of the pause-style apps.
  • one sec has the strongest research behind it and a polished breathing pause, but the free version covers one app.
  • ReClaim puts an intent check, limits and blocks inside a free minimalist launcher, so the friction starts at your home screen.
  • Digital Wellbeing is already on most Android phones and handles basic timers.

ScreenZen vs one sec: side by side

ScreenZen one sec ReClaim
Price Free, optional donations Free for 1 app; Pro €3.99/mo, €14.99/yr or €99.99 lifetime (varies by region) Free, no in-app purchases
How the pause works Wait timer that can grow with each open; mindful prompts Breathing animation, then choose whether to continue App Reminders ask how long you intend to use the app, then nudge you when time's up
Daily limits Yes, with optional block at the limit Yes (time limits) Yes, daily and weekly; app closes automatically
Hard blocks Optional block at the daily limit; rules by day and time Instant or scheduled blocking 5 minutes to 1 year, with smart suggestions; schedules
Website blocking Yes, via accessibility Yes, plus a desktop browser extension Not listed
Shorts and Reels blocking Not listed on Android Yes Not listed
Extra friction Settings lock to stop rule changes Porn-blocker setting can be locked Hidden apps with 4 levels and 10+ unlock challenges (puzzles, a 2-minute hold, Extreme challenges)
Replaces home screen No No Yes
Platforms Android, iOS, Mac, Windows Android, iOS, browser extension Android 8+
Google Play rating 4.8 (about 35K) 4.8 (about 46K) No ratings yet

Checked October 2026. Prices from one sec's official FAQ; Google Play lists one sec in-app items from $3.99 to $99.99 in the US.

ScreenZen in detail

ScreenZen's site describes it as a donation-supported screen time app, and it's completely free. Supporters can tip, but nothing is locked behind a paywall.

What it does well

  • Escalating delays. The wait before an app opens can increase every time you open it that day. The fifth Instagram check of the afternoon takes noticeably longer than the first.
  • Scroll interruptions. You can limit sessions to short bursts so you don't get pulled into a long scroll.
  • Goals, limits and schedules. Set daily targets per app, optionally block at the limit, and configure different rules by day and time.
  • Websites. It can block sites in the browser using accessibility permissions.
  • Settings lock. Makes it harder to loosen your rules when you're in the middle of an urge.

Where it falls short

ScreenZen is powerful, which also means more setup. And because it's a regular app, your home screen and its colorful icons stay exactly as they were. You're adding a speed bump to the road rather than moving the road.

one sec in detail

one sec shows a short breathing animation before a chosen app opens, then asks if you still want to go in.

What it does well

  • Evidence. The developers cite a peer-reviewed study in PNAS, run with the Max Planck Institute for Human Development and Heidelberg University, that found 57% fewer app openings on average. That's unusually strong backing for a consumer app.
  • In-app blocking. It can block YouTube Shorts and Instagram Reels while leaving the rest of the app usable.
  • Range. It also handles scheduled focus times, time limits and websites, and it has a desktop browser extension.

Where it falls short

The free version works with one app, so most people end up on Pro. one sec's FAQ says that if cost is a barrier, you can reach out to its support team, which is fair. But if you want several apps covered for free, it isn't the cheapest route.

Which is better, ScreenZen or one sec?

  • Choose ScreenZen if you want maximum control for free and don't mind configuring it.
  • Choose one sec if you want a simple, research-backed pause and are happy to pay for Pro, or you only need it for one app.

The best alternatives on Android

ReClaim: the pause, built into a free launcher

ReClaim takes the same insight, that a moment of intention beats willpower, and applies it from the home screen out.

  • App Reminders ask how long you intend to use an app before it opens, then nudge you when that time is up. It's a check-in, not a lockout.
  • Daily and weekly limits close an app automatically when its time runs out.
  • Blocks last from 5 minutes to 1 year, and ReClaim suggests related apps to block together.
  • Schedules make chosen apps unavailable during work hours, bedtime or weekends.
  • Hidden apps have 4 levels of friction and 10+ unlock challenges you choose per app, from a puzzle to holding for 2 minutes or an Extreme challenge.
  • The home screen itself is a clock and your favorites, with an icon-free alphabetical list for everything else.

It's free, with no ads, no account and no in-app purchases, and all of it stays on your device.

The honest trade-offs: ReClaim is new (released October 2026) and has no reviews yet. It doesn't have one sec's research track record or its Shorts and Reels blocking, and it only runs on Android. It also replaces your launcher, which is a bigger change than installing a standalone app, though switching back takes one setting. If that sounds right, get ReClaim on Google Play.

Android Digital Wellbeing

Built into most Android phones, Digital Wellbeing offers app timers, Focus mode and Bedtime mode. There's no pause or prompt, and timers are easy to dismiss, but it costs nothing and needs no install. See our app timers guide.

AppBlock

If the gentle pause isn't enough and you need something firmer, AppBlock's Strict Mode can lock your blocks by timer, schedule, cooldown or partner approval. The free version has limits; Premium removes them. It's covered in our best app blockers for Android roundup.

minimalist phone

A paid launcher that includes a blocker, in-app reminders and short-video blocking. Our dumbphone launcher guide compares it with ReClaim.

Why a pause works

Most opening is a reflex, not a decision. A pause turns that reflex into a choice: do I actually want this right now? Often the answer is no, and the moment passes. If you want the background, our guide to stopping opening apps on autopilot explains the habit loop, and how to stop doomscrolling on Android covers what to do once you're already inside the feed.

For every comparison in one place, see ReClaim alternatives.

Questions

Is ScreenZen free on Android?

Yes. ScreenZen describes itself as free and donation-supported, with no paid tier that unlocks extra features.

Is one sec free?

one sec is free for one app. Pro unlocks unlimited apps and more features. Its official FAQ lists €3.99 a month, €14.99 a year or €99.99 lifetime, with prices varying by region and a one-week trial.

What is a free alternative to one sec on Android?

ScreenZen is the closest free match, with a pause before apps open. ReClaim is another free option. Its App Reminders ask how long you intend to use an app before it opens, and it adds limits, blocks and schedules inside a minimalist launcher.

Can I use ScreenZen or one sec with ReClaim?

Yes. ScreenZen and one sec are regular apps, so they run alongside any launcher, including ReClaim. Most people find one set of rules is easier to manage, so start with one tool and add another only if you need it.

Does a pause before opening apps actually work?

The best evidence comes from the study one sec cites, published in PNAS, which reported 57% fewer app openings on average. Results vary from person to person, so it's worth trying for a couple of weeks.