Comparison

one sec | screen time + focus vs Blocker App

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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/

About

Blocker App

Take control of your screen time and boost productivity by blocking distracting websites, keywords, and apps. Set schedules and use password protection to break bad habits and stay focused.

Highlights
  • Block distracting keywords, sites, and apps
  • Block by category (social media, news, etc.)
  • Password protection for blocked content
  • Scheduling for daily routines and focus times
  • Utilizes Apple's Screen Time API
  • Private and safe, data stays on device
Features
Read full description

3.7 hours. That’s the average time you’ll spend looking at your phone today. Take control of your time with Blocker App! Stay focused, say goodbye to procrastination and digital distractions and say hello to increased concentration and improved time control. Block distracting websites and apps and break your bad habits today. With BlockerApp, the concept is simple. Select the websites, keywords, and categories you want to block on browsers to limit your screen time, improve productivity and maintain your focus. By adding a URL, Blocker App can also block any associated apps. ***KEY BENEFITS:*** - Unplug with family and friends - Set daily working hours, sleep, and routines - Better screen time management - Improve productivity at work - Reduce stress, be more mindful - You're happy and in control of your screen time - Stay in focus when you need it most In just a few clicks, you'll be free from distractions, addictions, and other digital traps and become more in control of your time, focused, and productive. ***MAIN FEATURES:*** - Block distracting keywords, sites, and apps. Manually add keywords, URLs of apps and websites you wish to block - Block by category: A few examples of categories include social media, adult content, news, gambling, and sports. You can decide whether you want to block whole categories or just certain websites and apps within a category. - Password Protection: Avoid procrastination and temptations by blocking access to a website or app with a pre-determined password - Scheduling: Create a daily schedule and routine when you need to stay on track with our ‘Scheduling’ feature, which enables you to set specific days and times when you can access certain sites and apps. ***PRIVATE & SAFE:*** We use Apple's Screen Time API in order to monitor and block apps you use. Installation is easy and takes a few seconds on your iPhone. BlockerApp works entirely on your phone and personal browsing data never leaves your device. Terms of use: https://sites.google.com/view/tmscallblocker/term Privacy policy: https://sites.google.com/view/tmscallblocker/privacy

Screenshots

one sec | screen time + focus4 screens
Blocker App4 screens

Verdict

The call

one sec | screen time + focus and Blocker App both sit at 4.8 stars, but that hides the real split: 76% of one sec | screen time + focus's written reviews are positive against 33% of Blocker App's. one sec | screen time + focus also leads on update cadence (every 2 weeks vs every 2 months) and ratings volume (24K vs 7). On price, rating, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. one sec | screen time + focus sells 6 in-app purchases, starting at $2.99 per month and Blocker App sells 2 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for one sec | screen time + focus against 4.7 for Blocker App. That said, the two scores are not equally well evidenced: one sec | screen time + focus has 24K ratings behind it against 7, so its average is the more settled of the two. Written reviews are what separate them: 76% of one sec | screen time + focus's written reviews are positive against 33% of Blocker App's.

UpkeepUpdate frequency

one sec | screen time + focus ships an update every 2 weeks, Blocker App every 2 months. The most recent releases landed on September 25, 2026 and July 6, 2026 respectively.

Scorecard4 real differences · 6 level
one sec | screen time + focus versus Blocker App: the parameters behind the verdict, then further details
Parameterone sec | screen time + focusBlocker App
PriceFreeFree
Rating4.8 (24K ratings) — better4.7 (7 ratings)
Positive reviews75.9% of reviews — better33.3% of reviews
Number of ratings24K — better7
Update frequencyEvery 2 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad
Requires iOS15.0 — better16.0
Further details — not scored
Size368 MB32 MB
Age rating4+9+
Developerriedel.wtf apps S.L.TOMOSIA VIET NAM COMPANY LIMITED

Customer experience

one sec | screen time + focus

All ratings23,574 ratings
Positive96.0%
Neutral1.5%
Negative2.5%
Written reviews1,610 reviews
Positive75.9%
Neutral9.4%
Negative14.7%

Blocker App

All ratings7 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive33.3%
Neutral0.0%
Negative66.7%

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
Show 1 more
  • More intervention types (e.g. games)

Blocker App

Not enough reviews yet to summarise bugs or requests.

In-app purchases

6 purchases

one sec | screen time + focus

Subscriptions4
  • 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
Show 1 more
  • one sec pro | Family Plan (1 Year)7 Days trial$29.991 Year
One-time2
  • one sec pro | Lifetime$99.99
  • one sec pro | Family Lifetime$149.00
2 purchases

Blocker App

Subscriptions2
  • Weekly Subscription$2.997 Days
  • Yearly Subscription$24.991 Year

Questions

Is one sec | screen time + focus free?
one sec | screen time + focus is free to download, with in-app purchases available.
Is Blocker App free?
Blocker App is free to download, with in-app purchases available.
Which has better reviews, one sec | screen time + focus or Blocker App?
one sec | screen time + focus is rated higher. one sec | screen time + focus averages 4.8 out of 5 from 24K ratings, while Blocker App averages 4.7 from 7 ratings.
Do one sec | screen time + focus or Blocker App have ads?
Neither one sec | screen time + focus nor Blocker App shows ads.
Which is updated more often, one sec | screen time + focus or Blocker App?
one sec | screen time + focus ships an update every 2 weeks, and Blocker App every 2 months. Most recently, one sec | screen time + focus was updated on September 25, 2026 and Blocker App on July 6, 2026.

Other comparisons