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Opal vs one sec: A Wall or a Pause?

These two apps get compared constantly, which is odd, because they disagree about what your problem is. Opal thinks you need a wall: during a session the app is blocked, conversation over. one sec thinks you need a mirror: it opens the app, but only after a breath and a question about whether you meant to. Both positions are defensible. Which one is right depends on how you actually cave — so this comparison sorts by that, not by feature count.

Head-to-head

What Opal is actually selling

Opal's paid tier is fundamentally selling Deep Focus: sessions you cannot casually cancel, which users describe as surviving nearly everything short of dismantling the phone's settings. Everything below Deep Focus — the free tier, standard sessions — is considerably softer, and the common complaint pattern follows directly: free users find sessions easy to end, upgrade prompts frequent, and the $99.99/year price steep for what the unpaid version demonstrated. The app is also iPhone-only, so an Android partner or a desktop habit is out of scope. If any of those complaints is yours, we surveyed the field in Opal alternatives.

What one sec is actually selling

one sec sells the moment between impulse and feed. Its pause is backed by an unusually good receipt — a 2023 PNAS study finding about 57% fewer target-app openings — and it is cheap, cross-platform, and free to trial properly on your single worst app. The catch is durability: the pause's power comes from surprise, and surprise depreciates. Long-term users report swiping through the breathing screen without registering it, at which point the app is charging ~$20 a year for a doorway with a delay. That failure mode, and the escalation path out of it, is the subject of one sec alternatives.

How hard are Opal and one sec to bypass?

Neither app can hold a determined user, because nothing on iOS can: any blocker can be deleted, or have its Screen Time permission revoked in Settings, in under a minute. The fair comparison is the cost of the lazy bypass, since low effort is the state you will actually be in. one sec's lazy bypass is a single tap — "continue" — and it is free. Opal's depends on tier: standard sessions end with a few taps; Deep Focus raises the cost to genuine effort and is the main reason to pay for Opal at all. On raw resistance, armed Deep Focus beats the pause decisively. But resistance you do not arm counts for nothing, and Deep Focus's rigidity is exactly why some subscribers quietly stop arming it.

Which is cheaper: Opal or one sec?

Over one year: one sec Pro about $20; Opal Pro $99.99, or $19.99 in any single month. one sec is roughly a fifth of the price, covers Android and desktop browsers, and includes its evidence base for free. Opal's premium buys the one thing one sec structurally cannot offer: sessions where "continue" is not on the screen. Whether that is worth the ~$80 difference is precisely the question of how often you tap continue. An accountant would note that both subscriptions bill you identically in the months you lapse and the months you do not. Neither app has an opinion about your behavior; only your calendar does.

Verdict by user type

• You open apps reflexively but close them once you notice: one sec. The pause is built for exactly this, the free single-app tier proves it before you pay, and the study behind it is real.
• You need protected blocks of time — deep work, evenings, exam season: Opal, and specifically Deep Focus. A pause cannot give you two guaranteed hours; a locked session can.
• Your habit spans iPhone, Android tablet, or a laptop browser: one sec by default, since Opal does not leave the iPhone.
• You have already habituated to pauses AND you dodge sessions you set: neither, honestly. Keep reading.
• You want the broader field first: our ranked list of best app blockers for iPhone covers both plus the rest.

The third option: something that costs you at the exact moment you cave

Here is the structural thing Opal and one sec have in common, despite disagreeing about everything else: both are friction, and friction is always free to overcome. The pause costs seconds. The unarmed session costs nothing. Even Deep Focus, when you decline to start it, costs nothing. In every case, the moment of caving — the only moment that matters — is priced at zero.

Paywall, our own app, prices that moment instead. It is iOS-only and pre-launch — a waitlist is live ahead of an upcoming App Store release — and it works like this: you pick the apps that own you, Paywall walls them using Apple's Screen Time controls, and unlocking early costs real money at a price you set — $0.50 minimum, typically $1–2, monthly cap included, and every wall opens free anyway after a cooldown you chose when arming it. An unlock buys a timed session, then the wall re-arms. Where do the unlock fees go? Yes, we keep it. That makes us the only app in this comparison that earns nothing from your good weeks. There is trial evidence for the approach: in a NEJM smoking-cessation study, participants who accepted real-money stakes quit at rates about 13 percentage points higher than reward-only programs. The whole category of money-backed blockers is mapped in apps that charge you to stay off your phone.

If friction has worked for you, use friction; it is cheaper. The third option exists for people whose ledger shows friction was tried, twice, with receipts.

FAQ

Filed August 21, 2026. Prices and app details checked on that date; both drift.