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one sec vs Opal

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

Free plan · from $3.99/mo

Opal

Screen time app that blocks distracting apps on phone and Mac

Free plan · from $8.29/mo

Where they differ

  • one sec starts at $3.99 / month, or $19.99 / year (US web store price). Opal starts at $8.29 / month, billed annually ($99.99).
  • Only one sec lists a browser extension.
  • Opal also covers focus music.
In commonFree planiOSAndroidmacOSOne-time purchaseSite & app blocker

At a glance

one secOpal
PricingFree planFree plan
Starts at$3.99 / month, or $19.99 / year (US web store price)$8.29 / month, billed annually ($99.99)
Free planThe breathing interruption and Re-Intervention for one app or website, with no ads.App blocking on iOS, Android and Mac with 1 rule (schedule, time limit or open limit), basic timers and soundscapes, and the Opal Score for today only.
Free trial1-week free trial of one sec pro; the web store attaches it to the annual planFree week on the yearly Pro plan; 3 free days on the monthly Pro plan
macOS
iOS
Android
Browser extension
Made byriedel.wtf apps S.L.Opal OS Corporation
Price read fromweb.one-sec.appopalapp.com
CheckedOct 5, 2026Oct 4, 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

Opal

  • Phone users who want distracting apps blocked automatically by rule
  • People who want a block that cannot be switched off once it starts
  • Students, who can apply for half-price yearly Pro

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.

Opal

  • The free plan allows 1 rule and shows the Opal Score for the current day only.
  • Hard Mode, Allow Only, unlimited rules and score history all require Pro.
  • No Windows, Linux or web version is listed, and the App Store lists the iOS app for iPhone only.
  • Opal's Mac page lists app limits and sync with the iPhone app as still to come on Mac.

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.

Opal

Focus Rules
Rules block chosen apps automatically on a schedule, after a time limit or after a set number of opens. The free plan allows 1 rule and Pro removes the cap.
Focus Timer
Pick what to work on, set a duration and stay locked in until the timer runs out. Advanced timers and soundscapes are part of Pro.
Hard Mode
A Pro setting under which Opal cannot be turned off while a block is active.
Opal Score
A single daily score built from sleep, focus and rest signals. Free accounts see today's score; the history needs Pro.
Mac app
Sessions block distracting websites and apps on macOS 13 or later, with the same Normal, Timeout and Deep Focus levels as the iOS app.
Opal for Schools
A separate school program in which administrators block set apps during school hours and follow usage on a dashboard.

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.

Opal

  • Free$0

    App blocking with 1 rule, basic timers and soundscapes, and the Opal Score for the current day.

  • Opal Pro (yearly)$8.29

    per month, billed annually ($99.99)

    Unlimited rules, Hard Mode, Allow Only, advanced timers and soundscapes, and Opal Score history.

  • Opal Pro (monthly)$19.99

    per month, billed monthly

    The same Pro features paid month to month; the pricing page puts the cost at $239 over a year.

  • Opal Pro (lifetime)$399

    one-time purchase

    Pro features for a single payment with no subscription.

  • Opal Teams ProCustom

    Everything in Opal Pro with a single invoice, advanced support and training, and an account manager.

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.

Opal

  • Annual discount

    Yearly billing costs about 58% less than monthly

    Opal Pro is $99.99 billed annually ($8.29 a month) against $19.99 billed monthly, which the pricing page totals at $239 a year.

  • Education

    Student discount: 50% off Opal Pro

    Students can apply for 50% off the yearly Opal Pro plan, shown as $49.99 billed annually ($4.19 a month).

  • Lifetime license

    Lifetime Opal Pro for a one-time payment

    The pricing page lists a lifetime Opal Pro option at $399, paid once.

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