Comparison · Phone apps and browser extension

ZenTab vs one sec

one sec puts a short breathing exercise between you and a distracting app or website, so opening it becomes a choice instead of a reflex. It started on iPhone and now has Android apps and browser extensions. The free version covers one app or site; one sec pro is a subscription or a lifetime purchase. ZenTab is a Chrome extension that blocks distracting sites, hides endless feeds and turns focus time into a streak, free to start with a $10 one-time Pro.
Prices and features checked on . Sources are listed below.

At a glance

Price
ZenTab: Free; Pro is $10 once, with a 14-day refund
one sec: Free for one app or site; pro $3.99 a month, $19.99 a year or $99.99 lifetime in the US, varying by region
Where it works
ZenTab: Chrome, Edge and Brave on desktop (Windows, Mac, Linux, ChromeOS)
one sec: iPhone, iPad, Android, Mac, and extensions for Chrome, Safari, Firefox and Edge
Website blocking
ZenTab: 10 sites free, with Intent Mode time passes; unlimited, Path Rules and allowlist mode with Pro
one sec: A breathing pause before the sites you choose, plus full blocks
Schedules and time limits
ZenTab: Schedules and daily limits with Pro
one sec: Scheduled blocks
Hard to undo in a weak moment
ZenTab: Strict Mode; Nuclear mode and commitment locks with Pro
one sec: Lock options with pro
Hide feeds, keep the site
ZenTab: YouTube Shorts free; 15 feeds on 9 sites with Pro
one sec: Not a dedicated feature
Focus timer
ZenTab: Pomodoro presets free; Flowtime and custom timers with Pro
one sec: Block sessions
Motivation
ZenTab: GitHub-style focus streak, Urge Report, Earned Time, achievements
one sec: Usage stats and intention tracking
Adult content
ZenTab: Adult sites blocked free; urge challenges, SafeSearch and a 30-minute lock with Pro
one sec: An adult content filter that interrupts adult sites
Blocks desktop or phone apps
ZenTab: No: browser only. Phone Shield puts your blocklist on your phone's DNS for free
one sec: Yes, on iPhone and Android
Account needed
ZenTab: No; optional Google sign-in for sync
one sec: Used to share pro across devices

Where one sec is better

  • Works on your phone, where it can pause apps like Instagram before they open.
  • A gentle, research-backed pause that's easy to keep on for years.
  • One pro purchase covers your phone and your computer.

Where ZenTab is better

  • $10 once versus $19.99 a year or $99.99 lifetime.
  • The free plan covers 10 sites, not one.
  • Intent Mode asks how long you need a site and closes it when time is up, instead of only pausing at the door.
  • Feed Eraser, a focus timer, ambience and a streak in the same extension.

Which should you pick?

Choose one sec if…

Your phone is where you lose time, and a pause before apps is what you need.

Choose ZenTab if…

You lose time in Chrome on your computer and want a pause that also limits how long you stay.

Sources

Checked on from one sec's own pages. Prices can change and may differ by country or app store. Spotted something out of date? Contact us and we'll fix it.

Frequently asked questions

How much does one sec cost?

When we checked, one sec pro was $3.99 a month, $19.99 a year or $99.99 lifetime in the US, with lower prices in some regions and a free version for one app or site.

Is ZenTab's Intent Mode like one sec?

Same idea, different ending. one sec makes you pause before a site opens. ZenTab asks how long you need it (5, 10, 15 or 30 minutes), shows a countdown on the page, and closes the site when time is up.

Can I use one sec on my phone and ZenTab on my computer?

Yes, and it's a good pairing: one sec for phone apps, ZenTab for Chrome. Avoid adding the same site to both on your computer, or you'll get two interruptions.

Try ZenTab free

Block distracting sites, hide endless feeds and grow a focus streak. Free forever, with a 7-day Pro trial and no card. Pro is $10 once, with a 14-day money-back guarantee.