El Monk, disco fisico para bloquear apps del iPhone

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Opal app review: a genuinely good app, and the subscription question

Opal is one of the best screen time apps on any phone. Careful design, the best data in the category, nudges that land at the right second, and it runs on iPhone, Android and Mac. Two things are worth thinking about before you pay: $99.99 a year adds up in a way the checkout screen never shows you, and the barrier lives inside the same phone that is tempting you, so it comes off from Settings.

This Opal app review covers what it does well, which is a lot, what it costs once you look past the monthly figure, where its ceiling is, and what to use instead if your problem is not that you lack data but that you already walk straight through every limit you set. We sell a physical blocker, so treat the last part accordingly — and read the middle part, where we say Opal is better than us at several things.

What Opal actually is

A focus app that blocks chosen apps for a set session and turns the rest into a score you can watch.

You pick the apps eating your day, set a session, and Opal keeps them shut for that stretch. Around that core it has built the thing it is best at, which is product. Focus Rules for what gets blocked and when. A Focus Timer you lock yourself into. An Opal Score that folds focus, rest and sleep signals into one number with a history. Focus Gems, which gamify streaks. An Allow Only mode that shuts everything except a short list. A harder blocking difficulty with no unblocks during a session.

On the US App Store it is listed as "Opal: Screen Time Control" and holds 4.7 stars from around 86,000 ratings, checked August 2026. That is a lot of people and a deservedly high score. One detail worth catching before you download: the current version asks for iOS 18 or later, so an older iPhone may be out.

It also does something Monk cannot do at all: it works on Android and on Mac. If your distraction problem is half laptop, Opal covers ground no NFC disc reaches.

How much does Opal cost?

$19.99 a month, $99.99 a year, or $399 once for Lifetime. There is a free tier, and students can apply for up to 50% off.

Those figures come from Opal's own pricing page, checked in August 2026, and they are in US dollars. The annual plan works out at $8.29 a month if you pay the year up front. Inside the App Store you will also see weekly plans at $4.99 and $9.99, which look small and are the most expensive way to buy anything. The free plan is real and worth using to find out whether the approach suits you, but the strict modes and unlimited recurring sessions sit behind Pro.

Now the arithmetic the purchase screen never runs for you. On the annual plan, three years of Opal is about $300. On the monthly plan it is closer to $720. And the day you stop paying, the barrier goes with it — you are renting the discipline, not owning it. None of this is greed peculiar to Opal; it is how almost every app in this category is built, and we broke the whole category down by what app blockers cost over one year and three.

The $399 Lifetime option exists precisely because a lot of people do that sum and flinch. Whether it is good value depends on a question only you can answer: are you still going to want this app in four years?

What Opal does well, and it is worth saying

Data, timing and craft. If what you need is awareness and a well-placed nudge, Opal is close to the best you can buy.

  1. The numbers. The score, the history, seeing your week laid out. If you genuinely do not know how much you use your phone or where it goes, Opal shows you better than Apple's own Screen Time does.
  2. The timing. Opal's interruptions arrive at the moment you were about to open the app, not in a summary the next morning. For a lot of people that one-second pause is the whole intervention.
  3. The craft. Onboarding, design, the feel of a thing somebody cared about. In a category full of blunt tools, it stands out.
  4. The reach. Phone and laptop, iOS and Android. Very few focus tools cover both ends of the day.

And this part matters: for plenty of people Opal is enough. If your problem is awareness, if seeing the number and getting the nudge is enough to change course, you do not need anything physical. Download it, pay for the year if it earns it, and stop reading comparison articles.

Can Opal be bypassed? The ceiling every app shares

Yes. The barrier lives inside the phone that is tempting you, and the permission that powers it comes off in Settings.

This is not a bug in Opal's code. It is the ceiling of the entire software category: when the block is software, the key is inside the cell. Every serious iPhone blocker runs on the Screen Time permission Apple grants it, that permission can be revoked in a few taps, and the app itself can be deleted like any other. Harder difficulty adds real friction and it is well designed. But the way out is still on the same piece of glass you are already holding, available at exactly the moment your judgement is worst.

Your 11:30pm self is not stupid. It knows precisely where the door is. The question was never whether it knows the way, only how much friction sits on it — and when the friction is four taps inside the screen you are already staring at, the odds are not with you.

That is why reviews of Opal split so cleanly into two camps. One says it changed their relationship with their phone: people who needed the data and the nudge. The other says they ended up switching it off: people who were already beating Apple's Screen Time and now beat Opal too. Neither group is stronger or weaker than the other. They arrived with two different problems, and software can only solve the first one.

Opal versus a physical barrier

The difference is not software quality. It is where the key lives: inside the phone, or outside it in an object.

Criterion Opal Monk (physical barrier)
What it is A software app An NFC disc plus an app
Price $99.99/year, $19.99/month, or $399 Lifetime €54.95, paid once
Cost over three years About $300 on the annual plan €54.95
Subscription Yes, unless you buy Lifetime No. Updates included
Where the barrier lives Inside the iPhone Outside it, on a disc you have to walk to
Can you switch it off in a weak moment? Yes, from Settings, in seconds No soft unlock. Getting into a blocked app means scanning the disc, or spending one of three finite emergency unlocks
Data and stats Excellent: score, history, trends Not the point. Screen Time already counts for you
Devices iPhone, Android and Mac iPhone only, iOS 16.2 or later
Where you can get it Anywhere with an app store Ships within Spain today. EU and UK are on the list, not on the shelf
Getting your money back Cancel the renewal whenever you like 30-day guarantee on top of the 14-day statutory period

One honesty the table owes you: on iOS there is no completely unbreakable block, hardware included. Safari is always there, and a determined detour will always exist. The real difference is smaller and more useful than that. With the key outside the phone, getting past the block stops being a two-second reflex and becomes an awkward decision you make wide awake. Most scrolling is not a decision. It is a gesture, and gestures are what a physical barrier interrupts.

Your 11:30pm self is not stupid. It knows exactly where the door is. The question was never whether it knows the way, only how much friction sits on it.

If you read the two camps above and recognised yourself in the second one, a better-designed app is not the fix. A key that lives outside the phone is a different proposition.

Alternatives to Opal without a subscription

Three, in ascending order of price, and the first one is free.

Foqos. Free and open source. It uses the same idea a physical blocker does: block your apps, make an NFC tag the only way back in. Buy blank tags and you have the mechanism for almost nothing. If your only objection to Opal is the price, start here, not with us — we wrote the honest Monk versus Foqos comparison and we still tell people to try Foqos first.

Brick. A one-payment NFC tile that runs on iPhone and Android and ships to most of Europe and North America. If you are reading this from London or Chicago, it is the physical option that can actually reach you today. Details in our Brick review.

Monk. A magnetic NFC disc the size of an AirTag, no battery, works offline, designed and made in Spain. €54.95, paid once. You choose which apps go behind the barrier; to open one you scan the disc, wherever you left it. There is no soft unlock in the app: no ignore-for-today button, no code to type. Leave the disc in the kitchen and opening Instagram from bed means standing up and crossing the hall — which is the one thing software cannot sell you, however well it is built. Block Mode and Allow Mode decide what is shut, scheduled sessions start on their own, Strict Mode stops the app being deleted mid-session, and each disc comes with three emergency unlocks that are finite on purpose. Calls and texts are never blocked. iPhone only, iOS 16.2 or later. Our own numbers, with their caveats, are in our Monk reviews page, written by us and labelled as such.

If you want the whole field side by side, there is a ranking of app blockers for iPhone, from the free ones to the physical ones, with the ceiling of each.

Frequently asked questions

How much does Opal cost per year?

$99.99 a year, which Opal presents as $8.29 a month billed annually, or $19.99 a month if you pay monthly. There is a $399 Lifetime option and a free tier. Weekly plans at $4.99 and $9.99 also appear as in-app purchases. Prices from opalapp.com, checked August 2026, in US dollars.

Can Opal be bypassed?

Yes. Like every blocking app, it depends on Apple's Screen Time permission, which is revoked from Settings in seconds, and the app can be deleted. The harder blocking modes add friction and they are well designed, but the exit stays inside the same phone. This is not a flaw in Opal. It is the limit of all software in this category.

Is Opal worth it?

If your problem is awareness, yes. It measures better than Apple does, the interruptions arrive at the right second, and it covers phone and laptop. If you have already talked yourself past every limit you have ever set, a subscription buys you a better-looking version of the same argument you keep winning.

Is there an alternative to Opal without a subscription?

Several. Foqos is free and open source and uses NFC tags. Brick is a one-payment tile that works on iPhone and Android. Monk is a €54.95 NFC disc, paid once, with no soft unlock: to reopen a blocked app you scan the disc, and the only way round that is one of the three emergency unlocks in the app, which are finite on purpose. In all three the key sits outside the phone, which no app can offer.

Does Opal work on Android?

Yes. Opal lists iPhone, Android and Mac. That is a genuine advantage over any iPhone-only tool, ours included, and if your day splits between a laptop and an Android phone it may be the deciding factor.

monk.

One payment, nothing to renew, and the key outside the phone

Opal will keep being an excellent app for people who need data and a nudge, and we are not going to pretend otherwise. But if the limits that live inside your phone stopped working on you a while ago, the answer is not a better-designed version of them. Monk is a physical disc, €54.95, paid once, that you scan to get your apps back — with a 30-day guarantee on top of your statutory 14 and nothing renewing next year.

One thing we will not do is promise you a parcel we cannot send. Monk currently ships within Spain. If you are elsewhere in the EU or in the UK, join the list and we will tell you when that changes; in the meantime Foqos costs nothing and Brick already delivers where you live.

See the physical alternative

One payment of €54.95 · No subscription · 30-day guarantee plus 14 statutory · Ships within Spain today

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