Freedom251 › Screen Time Management Apps
one sec
What one sec is
one sec helps users interrupt or block apps, social media and websites to change their screen-time habits. It can prompt a pause through breathing, reflection, phone rotation or typing exercises, and scheduled block sessions can keep selected apps or sites unavailable during set periods. Healthy Alternatives can offer activities such as journaling in place of scrolling. Structured integrations can block distracting apps while tasks remain unfinished and surface upcoming tasks as alternatives; a free LENGO integration asks for a vocabulary exercise before social-media apps open. The free version targets one app, while Pro supports unlimited apps and adds intentional app switching, time tracking, website blocking, strict sessions and additional intervention types. Browser extensions support Chrome, Firefox, Safari, Edge and other major browsers. One account can be used across iOS and Android devices and extensions on Windows, macOS and Linux. By default, data stays offline and intervention logic runs locally. A free plan and 7-day trial are listed. Pro costs $6.99 a month; the Family Plan costs $9.99 a month.
Who it suits
one sec suits people who want prompts or scheduled blocks to interrupt app and website use. Its individual, company and school offerings also include team licenses.
What it does well
- Free plan can target one app.
- Scheduled and recurring blocking are available.
- Prompts include breathing and reflection exercises.
- Browser extensions support major browsers.
- Intervention logic runs locally by default.
What to know first
- Free version is limited to one app.
- Unlimited apps require Pro.
- Family Lifetime costs 149.00 USD once.
Limits
The free version can target one app. Unlimited apps, website blocking, time tracking, strict block sessions, and additional intervention types are included with Pro.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| one sec pro Family Lifetime | lifetime · Family sharing | $149, paid once |
| one sec pro | annually · Unlimited apps · intervention types · time tracking · website blocking · block sessions | $19.99 a year |
| one sec pro Family Plan | annually · Family sharing | $29.99 a year |
| one sec pro | monthly · Unlimited apps · intervention types · time tracking · website blocking · block sessions | $6.99 a month |
| one sec pro Family Plan | monthly · Family sharing | $9.99 a month |
| one sec pro | lifetime · Unlimited apps · intervention types · time tracking · website blocking · block sessions | $99.99, paid once |
As one-sec.app lists them, read 30 Sept 2026. The maker's own page has the final word.
Getting started
- Visit the one sec website
- Install the app on iOS or Android
- Add the browser extension to Chrome, Firefox, Safari, Edge, or another major browser
- Choose the app or website to target
- Configure an interruption and schedule block sessions
- Select the free plan or start the seven-day trial
Verdict
one sec combines brief mindful prompts with scheduled blocking and alternative activities. The free plan is limited to one app; Pro expands the target list and adds tracking and other controls.
Questions
Is one sec free?
Yes. A free plan is available, along with a seven-day trial.
How much does one sec pro cost?
one sec pro costs $6.99 a month, billed monthly. The Family Plan costs $9.99 a month, and Family Lifetime costs 149.00 USD once.
Which platforms does one sec support?
It supports iOS, Android, Windows, macOS, and Linux through mobile apps and browser extensions. Extensions work with Chrome, Firefox, Safari, Edge, and other major browsers.
Can one sec block websites?
Yes. Website blocking is available as a Pro feature, and scheduled sessions can block configured apps or websites.
Does one sec sell user data?
one sec says it does not sell or analyze user data. Data remains offline by default, and intervention logic runs locally.
Is there a family plan?
Yes. The Family Plan provides family sharing for $9.99 a month, while Family Lifetime provides it for 149.00 USD once.
Facts from one sec's own pages
- Audience
- The product is offered for individuals, companies, and schools, with team licenses available from 83ct per user per month billed annually. · one-sec.app, 30 Sept 2026
- Blocking
- Users can schedule block sessions so configured apps or websites cannot be opened during defined periods. · one-sec.app, 30 Sept 2026
- Browser support
- The browser extension works with Chrome, Firefox, Safari, Edge, and other major browsers. · one-sec.app, 30 Sept 2026
- Core intervention
- The app uses customizable mindful interruptions, including breathing, reflection, phone rotation, and typing exercises. · one-sec.app, 30 Sept 2026
- Cross-device
- The same account can be used simultaneously on iOS and Android devices plus browser extensions on Windows, macOS, and Linux. · one-sec.app, 30 Sept 2026
- Data practices
- one sec says it does not sell or analyze user data, and intervention logic runs locally on the device. · one-sec.app, 30 Sept 2026
- Founded
- 2020 · one-sec.app, 28 Sept 2026
- Free limit
- The free version can target one app, while Pro supports unlimited apps. · tutorials.one-sec.app, 30 Sept 2026
- Headquarters
- Barcelona, Spain · one-sec.app, 28 Sept 2026
- Healthy alternatives
- Healthy Alternatives can replace unwanted scrolling with activities such as journaling or other suggested behaviors. · one-sec.app, 30 Sept 2026
- Integrations
- Structured integration blocks distracting apps during unfinished tasks and can show upcoming tasks as healthy alternatives. · one-sec.app, 30 Sept 2026
- LENGO integration
- The free LENGO integration requires a vocabulary exercise before social-media apps can be opened. · one-sec.app, 30 Sept 2026
- Privacy
- By default, user data remains offline; data is processed only when users choose features such as support contact, subscriptions, feedback, or iCloud sync. · one-sec.app, 30 Sept 2026
- Pro features
- Pro adds intentional app switching, time tracking, website blocking, strict block sessions, and other intervention types. · tutorials.one-sec.app, 30 Sept 2026
- Purpose
- one sec interrupts or blocks social media, apps, and websites to help users regain control of their time. · one-sec.app, 30 Sept 2026
- Research result
- The homepage reports an average 57% reduction in app openings and about two additional hours of sleep per week. · one-sec.app, 30 Sept 2026
- Support
- Support is provided through help articles, tutorials, an ideas and bug-feedback board, and direct contact. · one-sec.app, 30 Sept 2026
Where one sec stands on Freedom251
- Screen Time Management Apps#8 of 36
- Distraction Blocking Software#14 of 29