Quick Verdict

Choose ScreenZen if: You want customizable waiting periods with detailed analytics about your phone habits
Choose One Sec if: You want a breathing-based mindfulness pause with proven reduction in mindless app-opens

ScreenZen in 30 Seconds

ScreenZen adds a waiting period before you can open distracting apps. Set delays of 5, 15, or 30+ seconds per app. After waiting, you can proceed — but the app tracks how often you do. The analytics are revealing: most people realize they don't actually need to check the app after waiting 15 seconds. Detailed stats show daily opens, time per app, and trends over time. iOS and Android, freemium.

One Sec in 30 Seconds

One Sec intercepts distracting app launches with a breathing exercise. A calming animation plays, you take a conscious breath, then the app asks "Do you still want to open this?" One Sec reports a 57% reduction in app-opens from this single intervention. Custom interventions and journaling options add flexibility. iOS and Android, freemium at ~$39.99/year.

Feature Comparison

Feature	ScreenZen	One Sec
Intervention type	Customizable waiting period	Breathing exercise + intent check
Delay customization	Per-app delays (5s, 15s, 30s+)	Standard breathing duration
Custom interventions	Timer-based	Breathing, journaling, custom
Analytics	Detailed — opens, time, trends	Time saved, reduction metrics
Published effectiveness	User data shows significant reduction	57% reduction in app-opens
Platforms	iOS + Android	iOS + Android
Free tier	Yes	Yes
Pricing	Freemium	~$39.99/year
UI design	Clean, data-focused	Calming, mindfulness-focused

Key Differences

Friction Type

ScreenZen's friction is temporal — you wait. One Sec's friction is experiential — you breathe. The wait is boring. The breath is calming. Some people respond better to boredom (making the app feel not worth the wait) while others respond better to mindfulness (breaking the autopilot cycle through present-moment awareness). Neither is universally better.

Customization

ScreenZen lets you set different delays for different apps. Five seconds for email, thirty seconds for TikTok. This granularity is useful because not every app deserves the same level of friction. One Sec applies the same breathing intervention to all blocked apps. If you want fine-tuned control over which apps get more or less friction, ScreenZen is more flexible.

Analytics Depth

Both track usage, but ScreenZen's analytics are more detailed. You see exactly how many times you tried to open each app, how many times you waited and walked away, and how your patterns change over time. One Sec focuses on aggregate time saved and percentage reduction. If numbers drive your motivation, ScreenZen gives you more data.

Mindfulness Component

One Sec has a clear edge in mindfulness. The breathing exercise activates your parasympathetic nervous system and shifts you from autopilot to conscious awareness. ScreenZen's timer achieves awareness through frustration (you stare at a countdown) rather than relaxation. If you value the calming aspect of the intervention, One Sec wins.

Pricing

	ScreenZen	One Sec
Free tier	Yes — functional	Yes — basic features
Premium	Freemium	~$39.99/year
Platforms	iOS + Android	iOS + Android

Which Should You Choose?

You want per-app customizable friction levels: ScreenZen. Set different delays for different apps.

You want the intervention to be calming, not annoying: One Sec. Breathing exercises are inherently more pleasant than countdown timers.

You want the most detailed analytics: ScreenZen. Its open-count and trend data is more granular.

You want a published effectiveness metric to trust: One Sec's 57% reduction claim is well-documented.

You want the cheapest option: ScreenZen's free tier is more generous.

You prefer mindfulness over behavior hacking: One Sec.

Frequently Asked Questions

Which app actually reduces screen time more? Both report significant reductions. One Sec publishes a 57% reduction in app-opens. ScreenZen users report comparable results, though the app doesn't publish a single aggregate number. The effectiveness depends more on your personality than the app — some people respond to boredom (ScreenZen), others to mindfulness (One Sec).

Can I customize One Sec's breathing duration? One Sec offers some customization of the intervention experience, including the option to use custom interventions or journaling instead of the default breathing exercise.

Do either app work for apps I need to use but want to use less? Both excel here. Unlike hard blockers that cut off access entirely, ScreenZen and One Sec create a pause before access — perfect for apps you need (like email) but tend to overuse.

Which is better for ADHD? Both can help with ADHD-related impulsive phone checking. One Sec's breathing component adds a sensory grounding element that some ADHD users find helpful. ScreenZen's countdown can feel frustrating for users who struggle with waiting. Trial both during free tiers to see which fits.

Is there an app that adds spiritual content to this kind of nudge approach? FaithLock uses Bible verse quizzes as the interruption, and Holy Focus uses curated prayers — both add faith-based content to the nudge moment rather than timers or breathing exercises.

Sources: ScreenZen on App Store, ScreenZen on Google Play, One Sec on App Store, One Sec on Google Play

ScreenZen vs One Sec: Which Is Better?