one sec | screen time + focus vs ScreenZen
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
one sec | screen time + focus
This app introduces intentional friction to distracting apps and websites, helping users reduce screen time and improve focus. It delays access rather than blocking, promoting long-term behavioral change. Integrates with other apps for enhanced productivity.
- Adds friction to distracting apps
- Delays app access instead of blocking
- Reduces app usage significantly
- Doom Scroll Emergency Brake (Re-Intervention)
- Free Safari extension for websites
- Integrates with other productivity apps
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Willpower is not enough against social media algorithms! That’s why I made one sec: one sec adds friction to distracting apps to make them less appealing…long-term! This principle works really well: we have gained scientific evidence in numerous research studies with the Max-Planck Institute, with the German and Danish government, and in dozens more scientific collaborations: one sec has incredible effects on your screen time: app usage drops by 57% on average! …just read our App Store reviews or try it for yourself if you don’t believe me (…you should really try it)! How is one sec different from Screen Time limits or app blockers? - one sec DELAYS access to distracting apps instead of blocking apps completely – that’s an important difference psychologically. - This way, we solve the screen time problem at its roots: long-term & sustainably! - one sec is always on, and makes using social media just slightly more annoying…so you’ll end up using it only when you actually have a reason! Which apps can I use with one sec? - You can set up one sec with any app you’d like to use less / more intentional. - Most popular use-cases are: social media, games, video streaming, dating, stock/coin trading, adult content. - Using one sec with one app of your choice if completely free, for more you’ll need to purchase one sec pro (we also need to finance development of our app!). What if I get stuck scrolling? - No worries, one sec offers a Doom Scroll Emergency Brake: We call it Re-Intervention. - After a set time (e.g. 5 minutes) you’ll be kicked out of social media, and you’ll have to go through an intervention again to unlock more time. Where can I learn more about the scientific background of one sec? → https://one-sec.app/research Can I use one sec to interrupt access to websites as well? → Yes, one sec offers a free Safari extension as well. How does one sec work technically? - one sec uses Shortcuts Automation to toggle a deep breath animation whenever you open one of the configured apps (Instagram, Twitter, YouTube…). - This breaks unconscious social media habits short-term (literally, as soon as you have set it up) and even helps long-term by adding more friction when opening these apps. Integrations: - Structured: one sec blocks apps during unfinished tasks. - LENGO: learn vocabulary to unlock social media. I developed one sec for myself in 2020…and it worked so well I decided to upload it to the App Store. Especially for people with ADHD one sec is a great tool to gain back control for incredible focus and concentration. – Frederik Legal information: Available Subscription Options: one sec pro (annual / monthly / lifetime unlock) one sec can contribute mindful moments to the Health App via HealthKit. one sec is covered by U.S. Patent 12,468,828 B2. Terms (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://one-sec.app/privacy/
ScreenZen
This app offers multiple strategies to help you reduce screen time and control app usage. Features include delayed app opening, timed scrolling interruptions, and customizable app limits. It also provides options for strict blocking, settings protection, and encourages mindful breaks.
- Delayed app opening
- Scrolling interruption
- Set app goals and limits
- Configurable daily schedules
- Strict app blocking
- Screen time tracking for distracting apps
- Settings protection locks
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Multiple strategies to reduce your screentime 1. Delay before opening your app: A bit of time before choosing if you need to open your distracting app. You can have the wait time increase each time you open your app. 2. Interrupt your scrolling: Check your distracting apps for short periods of time so you don't get sucked in. 3. Set an app goal and optionally block when you reach your limit. 4. Configurable for different days of the week and time by app. 5. Messages like "Is this important" before opening your app. 6. See your screen time for only your distracting apps. Don't worry about Google Maps bloating up your time. 7. Strict block your apps: Either for time ranges, after a certain number of opens or ScreenTime. 8. Locks on Settings to prevent you from changing your settings when you want to open an app. 9. Breathing and other activities to encourage you not to need to open the app while waiting for it to unlock. 10. Streaks to encourage you not to exceed your limits or override your settings.
Screenshots
Verdict
one sec | screen time + focus and ScreenZen both sit at 4.8 stars, but that hides the real split: 93% of ScreenZen's written reviews are positive against 76% of one sec | screen time + focus's. ScreenZen also leads on chart position (#171 vs unranked). On price, rating, ratings volume and update cadence there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. one sec | screen time + focus sells 6 in-app purchases, starting at $2.99 per month and ScreenZen sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.8 for one sec | screen time + focus against 4.9 for ScreenZen. Both are backed by a comparable volume of ratings — 24K and 49K respectively. Written reviews are what separate them: 76% of one sec | screen time + focus's written reviews are positive against 93% of ScreenZen's.
one sec | screen time + focus ships an update every 2 weeks, ScreenZen every 3 weeks. Both last shipped on September 25, 2026.
| Parameter | one sec | screen time + focus | ScreenZen |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (24K ratings) | 4.9 (49K ratings) — better |
| Positive reviews | 75.9% of reviews | 93.4% of reviews — better |
| Number of ratings | 24K | 49K — better |
| Update frequency | Every 2 weeks — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Free with in-app purchases |
| Best chart rank | — | #171 — better |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad, Mac |
| Requires iOS | 15.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 368 MB | 159 MB |
| Age rating | 4+ | 4+ |
| Developer | riedel.wtf apps S.L. | ScreenZen LLC |
Customer experience
one sec | screen time + focus
ScreenZen
User reviews
one sec | screen time + focus
From 24K App Store ratingsWhat we love
- 🚀 Saves time
- 👍 Helps reduce screen time
- 💡 Customizable interventions
- 👍 Effective at curbing habits
- 👍 Intuitive and easy to use
Room to improve
- 🐛 Buggy at times
- 💰 Premium features behind paywall
- 🔒 Concerns about privacy/data collection
- 🔒 Inability to fully disable the app
- 🐛 Inconsistent behavior across apps
ScreenZen
From 49K App Store ratingsWhat we love
- 🚀 Completely reversed my scrolling addiction
- 🚀 Helps manage screen time
- 👍 Excellent app, easy to use
- 👍 Genuinely the best screentime app out there
- 👍 Effective in avoiding doom scrolling
Room to improve
- 🐛 Buggy, sometimes doesn't unlock apps
- 🐛 Notifications can't break through
- 🐛 Inconsistent UI across devices
Bugs and requests
one sec | screen time + focus
Reported bugs
4 issues- App switching issues
- Interventions not triggering properly
- Inconsistent behavior with shortcuts
- Crashes and freezes on certain devices
Requested features
6 requests- Ability to block more apps for free
- Customizable intervention timers
- Scheduled app blocking/access
- Passcode protection for settings
- Sync settings across devices
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- More intervention types (e.g. games)
ScreenZen
Reported bugs
3 issues- Unlock button not working as expected
- App stops working after some time
- Compatibility issues with iOS 16 update
Requested features
4 requests- Add more customization options
- Integrate with productivity/to-do apps
- Add more pause/break options
- Improve website blocking functionality
In-app purchases
one sec | screen time + focus
- one sec pro (1 Month)$2.991 Month
- one sec pro | Family Plan (1 Month)7 Days trial$4.991 Month
- one sec pro (1 Year)7 Days trial$19.991 Year
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- one sec pro | Family Plan (1 Year)7 Days trial$29.991 Year
- one sec pro | Lifetime$99.99
- one sec pro | Family Lifetime$149.00
ScreenZen
- Kind Tip$5.00
- Generous Tip$10.00
- Amazing Tip$20.00
Show 1 moreShow fewer
- Fantastic Tip$40.00
Questions
Is one sec | screen time + focus free?
Is ScreenZen free?
Which has better reviews, one sec | screen time + focus or ScreenZen?
Do one sec | screen time + focus or ScreenZen have ads?
Which is updated more often, one sec | screen time + focus or ScreenZen?
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