Should I use Opal or One Sec for iPhone screen time?

Opal if you want a hard blocker with a locked Deep Focus mode that prevents you from opening apps at all. One Sec if you want to keep app access but add a friction pause — a 1–30 second breathing delay — that interrupts the autopilot reflex. One Sec is also available on Android and Mac; Opal is iOS and Mac only.

Is Opal better than One Sec?

For strict blocking, yes. Opal's Deep Focus mode actually prevents app access during sessions, equivalent to Freedom's Locked Mode. One Sec doesn't block — it adds a pause before the app opens. If you want to reduce mindless opening without losing access, One Sec. If you need a hard lock, Opal.

How much does Opal cost compared to One Sec?

Opal costs approximately $99.99/yr. One Sec costs approximately $29.99/yr. One Sec is available on iOS, Android, and Mac; Opal's core experience is iOS-focused with a Mac companion app.

Can I use Opal and One Sec together?

Yes, but there is overlap. One Sec runs as a system-level shortcut trigger and Opal runs as a screen time extension. Using both on the same app would create a pause (One Sec) followed by a block (Opal Deep Focus). For most users, choosing one approach — friction or hard block — is cleaner.

Opal vs One Sec: Hard Blocker or Friction App? (2026)

At a glance
Tool	Platforms	Pricing	Best for	Rating
Opal	ios, mac	freemium	iPhone users who need Freedom-style hard lockouts with a polished UI and are willing to pay for the iOS-native experience	4.4
One Sec	ios, android, mac	freemium	Users who want to break reflexive phone-grabbing habits through intentional friction — effective for mindless app-opening, not effective as a hard lockout	4.3

If you need an app to be genuinely inaccessible for a set period, choose Opal — its Deep Focus mode is a true hard lockout that cannot be bypassed on iOS. If you want to reduce reflexive phone-grabbing without prohibition, choose One Sec — it adds a breathing pause before apps open but does not block access. These tools solve different problems and are not direct substitutes.

Last verified: May 25, 2026 · Reading time: 5 min

TL;DR

Need the app genuinely inaccessible? → Opal — Deep Focus cannot be bypassed.
Want to pause before opening an app, not block it? → One Sec — friction, not prohibition.
Have both a phone and Android or desktop? → Freedom covers all platforms; neither Opal nor One Sec does cross-device hard blocking as comprehensively.
On a budget? One Sec’s Pro (~~$29.99/yr) is one-third the cost of Opal (~~$99.99/yr).

The core difference

This comparison is unusual because Opal and One Sec are not the same kind of tool:

Dimension	Opal	One Sec
Blocking type	Hard block — app is inaccessible	Friction — app opens after a pause
Can you get around it?	No (Deep Focus mode)	Yes — wait out the pause
Purpose	Prohibition	Habit-building
Best for	Deep-work sessions requiring full lockout	Reducing mindless app-grabbing

Choosing between them is not “which is better” — it is “which problem are you solving.”

The full comparison

Feature	Opal	One Sec
iOS	✓	✓
Android	—	✓
Mac	✓ (companion app)	✓
Hard lockout	✓ Deep Focus	—
Friction/pause	—	✓ 1–30 sec configurable
Can bypass during session	No	Yes (wait it out)
Schedules	✓ Pro	Limited in free tier
Per-app config	✓	✓
Usage insights	✓	✓
Pricing	~$99.99/yr	~$29.99/yr
Free tier	1 active block	3 app configurations
5-year cost	~$500	~$150

Where Opal wins

It actually prevents access. Deep Focus is a genuine lockout at the iOS system level. Uninstalling Opal during a session does not end it. This is the defining feature — and the reason Opal costs more.
Better for structured work sessions. “I am blocking Instagram for 3 hours starting at 9 AM” is Opal’s use case. The hard lock means you never face the decision to re-enable.
Polished iOS experience. Best-designed distraction blocker on iPhone. The streak system and usage insights make the app feel like a productive tool rather than a restriction.

Where One Sec wins

Android support. Opal is iOS + Mac only. One Sec works on iOS, Android, and Mac — the only friction-layer tool with full cross-platform mobile coverage.
Price. $29.99/yr vs $99.99/yr. If your problem is reflexive grabbing (not needing hard prohibition), paying 3× for a hard block is unnecessary.
Less disruption. One Sec doesn’t prevent you from reading that urgent message — it just makes you intentional about opening the app. Hard blockers occasionally cause friction with legitimate use.
Evidence base. One Sec’s friction model has peer-reviewed support. For habit formation (as opposed to work-session discipline), the research shows friction is as effective as hard blocking for most users.
Pairs well with hard blockers. One Sec fills the gap between hard-block sessions — when Freedom or Opal is off, One Sec is on. The two tools are complementary.

Pricing breakdown

Window	Opal	One Sec
Year 1	~$100	~$30
Year 3	~$300	~$90
Year 5	~$500	~$150

Both have free tiers. Opal’s free tier allows 1 active block — enough to test the Deep Focus mechanism. One Sec’s free tier allows 3 app configurations — usable long-term if your problem is 1–2 apps.

Who should pick which

Your situation	Pick
I need an app locked for a 3-hour work block	Opal
I keep mindlessly opening Instagram 40 times a day	One Sec
I have both an iPhone and Android	One Sec (Opal has no Android)
I’m on a budget	One Sec (~$30/yr vs ~$100/yr)
I need the same block on iPhone and MacBook	Opal (Mac companion app)
I need Mac, Windows, iPhone, and Android	Freedom — covers everything
I want both hard blocking and friction	Both — they stack without conflict

Can you use both together?

Yes — and it’s a good combination. Use Opal for scheduled hard-block sessions (work hours). Use One Sec as a background layer for the rest of the day. When Opal is not in an active session, One Sec’s pause interrupts mindless grabs before they become a loop. Total cost: ~$130/yr.

Common follow-ups

Does One Sec work if I’m really determined to open the app? One Sec’s pause is not a hard block — a determined user can wait it out. That’s intentional. One Sec’s research shows it’s effective for reflexive phone-grabbing (the mindless autopilot), which is the most common pattern. For users who want to open the app and won’t be stopped by a pause, Opal is the right tool.

Does Opal’s Deep Focus work if I uninstall Opal? No — uninstalling Opal during a Deep Focus session does not end the session. The block continues until the timer expires. This is the advertised behaviour, not a bug.

Is there a free way to hard-block iPhone apps? iOS Screen Time (built into every iPhone) allows app limits and downtime. It’s not as polished as Opal and can be disabled by entering your passcode, so it lacks the hard-lockout guarantee. For a free iOS hard block with lower bypass resistance, screen time app limits are the starting point. Opal’s Deep Focus is the paid upgrade to something genuinely unbypassable.

Neither is for desktop — what do I use there? Cold Turkey for Mac + Windows ($39 one-time) or Freedom for cross-device. SelfControl for free Mac-only blocking.

What to do next

For hard blocking: Try Opal free [partner link] — 1 block on the free tier.
For friction: Try One Sec free [partner link] — 3 app configurations on the free tier.
For cross-device coverage: See Freedom vs Cold Turkey or the full distraction-blockers guide.

Links marked [partner link] are affiliate links. Rankings on FeedCutter are never influenced by affiliate revenue. Full disclosure.

Opal

One Sec