one sec vs ScreenZen
Price, platforms and features side by side. The table says where each price was read and when.
one sec
Screen time app that adds a pause before distracting apps open
Where they differ
- one sec starts at $3.99 / month, or $19.99 / year (US web store price). ScreenZen is free.
- Only one sec lists a browser extension.
- Only ScreenZen lists a Windows app.
- one sec can be bought with a one-time purchase.
- ScreenZen also covers time tracking.
At a glance
| one sec | ScreenZen | |
|---|---|---|
| Pricing | Free plan | Free |
| Starts at | $3.99 / month, or $19.99 / year (US web store price) | Free |
| Free plan | The breathing interruption and Re-Intervention for one app or website, with no ads. | The app is free with no subscription. ScreenZen describes itself as donation-supported, and the in-app purchases are optional tips. |
| Free trial | 1-week free trial of one sec pro; the web store attaches it to the annual plan | None listed |
| macOS | ||
| Windows | ||
| iOS | ||
| Android | ||
| Browser extension | ||
| Made by | riedel.wtf apps S.L. | ScreenZen LLC |
| Price read from | web.one-sec.app | screenzen.co |
| Checked | Oct 5, 2026 | Oct 5, 2026 |
Who each one suits
one sec
- People who want a pause before social apps rather than a hard block
- Using one purchase across iPhone, Android, Mac and desktop browsers
- Teams and schools buying multi-seat licenses
ScreenZen
- People who want a screen time blocker without paying a subscription
- Adding a pause before social apps instead of removing them
- Keeping phones out of use in the bedroom with the optional halo device
Worth knowing
one sec
- The free version covers a single app or website; adding more needs one sec pro.
- The price depends on where you buy: one sec's web store charges $3.99 a month in the US, while the US App Store lists the monthly purchase at $6.99.
- No Windows or Linux desktop app is listed; on those systems one sec runs only as a browser extension.
- Not every Pro feature is on every platform: the help center's table marks strict block sessions and website blocking as unavailable on Android.
ScreenZen
- The app is funded by donations; its in-app purchases are optional tips, listed from $5 to $40 on the US App Store.
- The halo companion device costs $49, ships to the US only and works with iOS 16.4 or later and Android 12.0 or later.
- The Windows version is a direct download from ScreenZen's site, while the Mac version shares the App Store listing with the iPhone and iPad app.
- On Android, website blocking relies on the Accessibility permission.
Key features
one sec
- Interruptions before an app opens
- A short pause appears before a chosen app or site opens. Types include a breathing exercise, a mirror, a math task, rotating the phone and typing random text.
- Re-Intervention
- After a set time inside an app, for example 5 minutes, one sec sends you out and asks you to go through another interruption to unlock more time.
- Block sessions and schedules
- Chosen apps and sites can be blocked completely during a block session or at scheduled times, and interruptions can be limited to set weekdays and hours.
- Browser extension
- Adds interruptions and blocking to websites in Chrome, Firefox, Safari and Edge on Windows, macOS and Linux, under the same account as the phone apps.
- Intention and emotion tracking
- Prompts ask why you are opening an app or how you feel, alongside journaling and nudges toward alternative activities such as reading or calling a friend.
- Progress statistics
- Charts and comparisons show how app use has changed and how much time the interruptions have saved.
ScreenZen
- Delay before an app opens
- A wait is added before a distracting app opens, and it can lengthen with each open. A message of your choice, such as a question to yourself, is shown meanwhile.
- Interrupted sessions
- Apps can be opened for short periods only, so each session ends with a prompt to decide whether to keep going.
- Limits and strict blocks
- Set a daily goal per app and optionally block it at the limit. Strict blocks can apply to time ranges, after a number of opens or after a set screen time.
- Schedules by day and time
- Settings can differ by day of the week and time of day for each app, for example stricter rules during work hours or at bedtime.
- Lock mode
- Settings can be locked so they cannot be changed on impulse, and the site says lock mode can prevent uninstalling the app.
- halo companion device
- An optional Bluetooth device, sold separately, that blocks chosen apps while the phone is inside its radius of up to 50 ft, such as a bedroom.
Plans
one sec
Free$0
The breathing interruption and Re-Intervention for a single app or website, with no ads.
one sec pro (annual)$19.99
per year, after a 1-week free trial
Unlimited apps, other interruption types, website interruptions, block sessions and time tracking. Same price on the US App Store.
one sec pro (monthly)$3.99
per month, US price on the vendor's web store
The same Pro features paid month to month. The US App Store lists its monthly in-app purchase at $6.99.
one sec pro (lifetime)$99.99
one-time purchase
Pro features for a single payment, at the same price on the web store and the US App Store.
Multi-seat planFrom $9.99
per seat / year, at 50 or more seats
Team and school licenses from the web store: $15.99 per seat a year for 4 to 9 seats, $12.99 for 10 to 49 and $9.99 for 50 or more.
Family Plan$29.99
per year, US App Store in-app purchase
Also listed at $9.99 a month or $149 for a lifetime family unlock. The listing does not say how many people it covers.
ScreenZen
ScreenZen$0
The complete app: delays, limits, strict blocks, schedules and lock mode. Optional tips of $5 to $40 are listed on the US App Store.
Ways to pay less
one sec
- Annual discount
Annual billing costs about 58% less than monthly
On the web store's US prices, one sec pro is $19.99 billed yearly against $3.99 a month, which comes to $47.88 over twelve months.
- Lifetime license
Lifetime one sec pro for a one-time payment
The web store and the US App Store both list a lifetime unlock of one sec pro at $99.99, paid once.
- Education
50% discount for students
one sec's help center says it offers students a 50% discount on one sec pro. The article does not describe how to claim it.
- Other savings
Lower per-seat prices from 4 seats
In the web store the annual US price per seat falls from $19.99 to $15.99 at 4 seats, $12.99 at 10 seats and $9.99 at 50 seats.
ScreenZen
No public discounts listed.

