Physical App Blockers: How They Work and How to Choose One

What is a physical app blocker?

It is a real object, almost always a passive NFC tag, that acts as the key to your phone: the apps you chose stay locked until you scan it.

Two pieces make it work. An app does the blocking — Instagram, TikTok, YouTube, whatever you put on the list — and an object does the unlocking. The object has no battery, no screen, no Bluetooth: a passive NFC chip, the same technology as a hotel keycard. When you want to open a blocked app, there is no button to press. You get up, walk to wherever you left the object, and hold your phone against it.

That is the entire trick. A screen-time app can be switched off from the sofa in four taps. An object sitting on the fridge cannot.

Several companies now sell some version of this — Brick, Unpluq, Blok, Bloom, Monk, plus the free do-it-yourself route with Foqos and a generic tag — and timer boxes sit alongside them solving a blunter version of the same problem. They all start from one principle. What separates them is cost over time, whether you own the barrier or rent it, how far away the key lives, and what happens the day something breaks.

How does a physical blocker work on an iPhone?

The blocker's app uses Apple's Screen Time API to lock your apps. Scanning the physical object is the only thing that reopens them.

Apple does not let a third-party app close other apps on its own. What it does offer is the Screen Time API, the same machinery behind iOS parental controls. Every serious product on this list is built on it. You grant permission once, choose which apps go on the list, and from then on iOS itself enforces the block. Tap the icon and you get a shield screen instead of the app.

The difference from an ordinary blocking app is the exit. There is no "turn it off for today" button here; the only key is the NFC scan. Because NFC works without a connection, the block works without one too — no Wi-Fi, no mobile data. And because it runs on Apple's own system, calls and texts are never blocked. You stay reachable.

One honest note, because this category has a habit of overselling itself: there is no unbreakable block on iOS. Someone determined enough gets around any of these — a browser, a second device, deleting and reinstalling. The point was never a prison. The point is making a five-second impulse cost more than five seconds, so it dies somewhere on the way to the fridge. For that, it works very well. We went into the loopholes in detail in whether you can get around a physical app blocker.

Why does this category exist when blocking apps already do?

Because an app is switched off with a button, and the button lives on the device that is tempting you. A physical key lives somewhere else.

Screen-time software has a structural problem: it asks for willpower at the moment you have least of it. You open Instagram on autopilot, the limit warning appears, and the same thumb that opened the app taps "ignore for today". Barrier and temptation share an address. Temptation wins most nights.

A physical blocker breaks that loop by moving the key out of the building. If the tag is by the front door and you are in bed, opening TikTok costs a walk, and most of the time the walk is not worth it. That is not discipline and it is not magic. It is architecture. You make the hard decision while you are clear-headed, and you attach a physical price to the easy one.

Worth saying plainly: every brand in this category is on the same side. Brick, Unpluq, Blok, Bloom, Foqos with a cheap tag and Monk are all arguing the same thing against the same enemy. The real differences are money, portability and what happens when you need help. If you want the comparison narrowed to iPhone alone, it is in the best app blockers for iPhone.

Which physical app blockers can you actually buy?

Roughly five routes: a wall device bought outright, a tag that runs on a subscription, a card that lives in your wallet, the free DIY route, and a magnetic disc bought outright. Timer boxes are the sixth, and a different animal.

Every price below was checked on the manufacturer's own site in August 2026. Prices move, and currency, tax and shipping change what you actually pay, so read these as the shape of each offer rather than a quote. Where a company does not publish a number, we have said so instead of inventing one.

Brick

The product that proved the category worked, and it built a large community doing it. Brick is an NFC device you stick to a wall or a fridge, with a well-made app behind it. On their site it is $59, and they are blunt about the model: no subscriptions, ever. The app for iOS and Android is included in that price. If you lose the device, the app holds five emergency unlocks that release everything.

What to check before you buy: their homepage does not spell out which countries they ship to or how duties are handled, so if you are outside the US, confirm both at checkout rather than assuming. Support is in English. We went through the full arithmetic in our Brick review.

Unpluq

A Dutch NFC tag with a carefully built app and the opposite business model. The tag costs $30 on their site, and a Premium subscription is required for the tag and app to work — sold in three, six or twelve-month terms. They offer a 30-day money-back guarantee and support iPhone from iOS 16 as well as Android. Their flexibility is genuine: several configurable unlock methods and a family plan for managing a child's phone.

Their headline claim is that people using it reduce screen time by 1h 20m a day. That is their own figure from their own site, not an independent study, and it deserves to be read that way.

The thing to decide is the model itself. You are renting the barrier. It exists while you keep paying, and the tag on your fridge stops meaning anything the month you stop. Some people prefer it that way — a bill that stings a little is its own form of commitment. Just know which of the two you are buying.

Blok and Bloom: the card format

Both put the key in something the size of a credit card instead of an object on a wall. Blok sells the Blok Card at $29 on their site; when we checked, the keychain and magnet versions were sold out. Bloom's app is free on the App Store, where it sits at 4.8 from 3.1K ratings, and it works by scanning an NFC keycard — the card's price is not published on the App Store listing, so that number has to come from their own site, not from us.

The card format is a real trade-off rather than a lesser version. A card goes in your wallet, so the system still works when you are out of the house. It also means the key is permanently three seconds from your hand, which is precisely the distance a fridge magnet exists to destroy. If your problem is the sofa at eleven at night, distance is the feature. If your problem is the commute and the queue and the lift, portability is.

A generic NFC tag plus Foqos

The DIY route, and the honest answer for a good number of people reading this. Foqos is a free, open-source iOS blocker released under the MIT licence that describes itself as a free alternative to Brick, Unpluq, Blok and Opal. It uses Apple's Screen Time API, and you start a session by scanning any NFC tag — the generic multipacks sold online for a few euros work fine. Total cost: the tags.

If you do not want to spend money on this, stop here and use Foqos. We sell a competing product and that is still the right recommendation for that case. What you give up is the safety net. There is no support desk — the help channel is a GitHub repository — no warranty, and the whole setup is on you. Foqos also offers manual and QR modes alongside NFC, with strict unlock rules as an option, which means how rigid your system ends up being depends on you not quietly leaving yourself a door open. For someone who enjoys tinkering, none of that is a cost. For someone who wants it to simply work on a Tuesday morning, it is.

Timer boxes

No app involved. The phone goes in, you turn the dial, and the lid stays shut until the time runs out. They are sold by a lot of brands at a lot of different prices, so check the seller rather than trusting a figure in an article.

As a physical barrier they are the most absolute option here and the least precise. They lock the whole phone: no calls, no maps, no bank verification code at the moment you need one. For one specific evening they are excellent. As a daily system, burying an entire phone because of two apps is a very large hammer for a very small nail.

Monk

Ours, so read this section with the suspicion it deserves. Monk is an NFC disc roughly the size of an AirTag, magnetic, no battery. €54.95, or €89 for two and €119 for three. One payment, no subscription, app and future updates included, 30 days to send it back.

On mechanism it sits at the strict end of the category. To reopen a blocked app you scan the disc, every time. There is no soft unlock inside the app: no ignore-for-today button, no code to type. There are three emergency unlocks and they are finite — a spare key, not a loophole. Around that: Block and Allow modes, so you can either ban four apps or permit only the essential ones during deep work; Strict Mode for people who know they negotiate with themselves; scheduled sessions that start on their own; and remote scan, which lets you manage a child's phone from yours without touching theirs.

Two limits, stated up front rather than buried. Monk is iPhone only, iOS 16.2 or later, and there is no Android version. And Monk currently ships within Spain — if you are reading this from the UK, the US or elsewhere in the EU, the honest answer today is a waiting list, not a delivery date. If the payment model is what you are weighing, the full sum is in app blockers without a subscription.

How do price, mechanism and subscription compare?

They all keep the key outside the phone. What actually separates them is total cost, whether the barrier expires, how portable the key is, and who picks up the phone when something goes wrong.

All figures checked on each maker's own site in August 2026. Currency conversion, tax and shipping are yours to add.

Three conclusions. Outright purchases pull ahead the longer you keep them, because year five costs what year one did. If the barrier only matters at home, put the key as far from the sofa as you can stand. And if you want to spend nothing, the Foqos route is a legitimate answer, as long as you accept that you are also the support desk.

When a physical blocker is the wrong buy

Not every case ends with hardware, and some of them end with a competitor. Here is where we would talk you out of it.

You do not want to spend money. Then don't. Foqos plus a multipack of tags gets you the same mechanism for the price of the tags, and ScreenZen — free, donation-supported, on iPhone, Mac, Windows and Android — gets you friction without buying an object at all. Neither is a compromise version of this idea. They are the idea, without a company attached.

You are on Android. Monk is not an option for you today. Brick includes an Android app with the device, and Unpluq supports Android too. Start there.

You are out of the house all day. An object on the fridge is dead weight if the problem happens on a train. Either accept a card format, where the key travels with you and the friction is smaller but real, or use software and pick the one that annoys you most.

You want the whole phone gone for a few hours. A timer box does that better than any of us. Nothing app-based will ever match a closed lid.

You are outside Spain. Monk ships within Spain today. Everything above still applies, and one of the others will serve you sooner than we can.

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