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
Opal
Screen time app that blocks distracting apps on phone and Mac
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.
At a glance
| one sec | Opal | |
|---|---|---|
| Pricing | Free plan | Free plan |
| Starts at | $3.99 / month, or $19.99 / year (US web store price) | $8.29 / month, billed annually ($99.99) |
| Free plan | The 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 trial | 1-week free trial of one sec pro; the web store attaches it to the annual plan | Free week on the yearly Pro plan; 3 free days on the monthly Pro plan |
| macOS | ||
| iOS | ||
| Android | ||
| Browser extension | ||
| Made by | riedel.wtf apps S.L. | Opal OS Corporation |
| Price read from | web.one-sec.app | opalapp.com |
| Checked | Oct 5, 2026 | Oct 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.

