If you've ever deleted Instagram only to reinstall it 20 minutes later, you already know the problem. Software-based app blockers are easy to turn off. The Blok app takes a different approach: it uses a physical NFC device to lock your phone down at the system level. No workarounds. No "just this once."
Tired of app blockers you can just turn off? Blok uses a physical NFC card to make blocking harder to bypass. See the Blok Card →
Blok is an NFC phone blocker that combines a physical device (card, keychain, or magnet) with an app that uses Apple's Screen Time API and Android's built-in restrictions. When you tap your phone to the Blok device, it activates a blocking session. To unblock, you tap again. That physical step changes everything.
Table of contents
- What is the Blok app?
- How NFC blocking works
- The 3 blocking modes
- Why physical friction matters
- Getting started with Blok
What is the Blok app?
Blok is a digital wellness app that blocks distracting apps and websites on your phone. But unlike other screen time apps, Blok requires a physical NFC tap to activate and deactivate blocking sessions.
Here's what makes it different:
- Physical activation: Tap your phone to a Blok NFC device to start a blocking session
- System-level blocking: Uses Apple's Screen Time API (iOS) and built-in device restrictions (Android), so apps can't be bypassed
- 3 customizable modes: Work, Sleep, and Focus, each with their own block/allow lists
- Multiple device options: Card, keychain, or magnet, whatever fits your life
Blok is available as a subscription at $59.99/yr or $9.99/mo, with physical NFC devices sold separately through the Blok store.
How NFC blocking works with the Blok app
NFC stands for Near Field Communication. It's the same technology that powers contactless payments like Apple Pay. When you hold your phone within a few centimeters of an NFC tag, the two devices communicate instantly.
With Blok, the process is simple:
- You set up your blocking preferences in the app (which apps to block, which to allow)
- When you're ready to focus, tap your phone to your Blok NFC device
- The app activates system-level blocking immediately
- When you're done, tap again to deactivate
The key difference from software-only blockers: Blok uses Apple's Family Controls framework on iOS, which is the same system-level API that powers parental controls. Apps blocked through this API literally cannot be opened. There's no "ignore limit" button, no quick settings toggle, no workaround.
On Android, Blok uses built-in device administration features to achieve similar results. The blocking happens at the operating system level, not through a VPN or overlay that can be dismissed.
The 3 blocking modes
Blok comes with three customizable modes, each designed for different parts of your day:
Work mode
Block social media, games, and entertainment apps while keeping productivity tools accessible. Perfect for deep work sessions. You might block Instagram, TikTok, Twitter, and YouTube while keeping Slack, email, and your calendar open.
Sleep mode
The strictest mode. Block everything except essentials like your alarm clock, phone, and messages. Studies from the Sleep Foundation show that phone use before bed delays sleep onset and reduces sleep quality. Sleep mode helps you put the phone down for real.
Focus mode
A flexible middle ground. Maybe you want to block social media but keep YouTube available for background music. Or block everything except a specific app you need for a project. Focus mode lets you customize exactly what stays and what goes.
Each mode has its own block list and allow list, so you set them up once and just tap to switch between them. You can also stack modes and schedule them to activate automatically at certain times.
Beyond modes: streaks, scheduling, and Blok World
The Blok app isn't just about blocking. It includes features designed to build lasting habits:
Real friction beats willpower every time
The Blok Card adds a physical step between you and your distractions.
- Streaks: Track consecutive days of hitting your blocking goals. The longer your streak, the more motivated you stay.
- Scheduled blocking: Set Sleep mode to activate automatically at 10pm every night, or Work mode to kick in at 9am on weekdays. No manual tap required.
- Break feature: Need a quick check? Take a 1, 5, or 15-minute break without ending your session.
- Emergency unblock: Genuinely need access? You get 3 emergency unblocks. (Proceeds from extra unblocks support the Blok Foundation.) Use them wisely.
- Blok World: A social leaderboard where you can see how your focus time compares to other Blok users. A little friendly competition goes a long way.
- Session history: Track your blocking patterns over time to understand your habits.
Why physical friction matters for the Blok app
This is the core idea behind Blok: friction changes behavior.
Research from behavioral science consistently shows (we explore the science of friction in depth here) that even small barriers dramatically affect whether we follow through on intentions. A 2021 study published in Nature found that adding friction to digital choices significantly reduced impulsive behavior.
Software blockers fail because they're frictionless to disable. You're one tap, one toggle, or one password away from giving in. Your future self, the one who set up the blocker, loses to your present self every time.
A physical NFC device changes the equation. Your Blok card might be in your wallet in the other room. Your keychain might be hanging by the door. That physical distance, even if it's just 10 feet, creates enough friction to break the autopilot loop of reaching for your phone.
It's not about willpower. It's about designing your environment so the easy choice is the right choice.
Getting started with the Blok app
Setting up Blok takes about 60 seconds (see our full setup guide):
- Download the Blok app from the App Store or Google Play
- Create an account and choose your subscription ($59.99/yr or $9.99/mo)
- Set up your 3 modes with custom block and allow lists
- Pair your NFC device (card, keychain, or magnet)
- Tap to start your first blocking session
That's it. No complicated setup, no VPN configuration, no battery drain. Just a physical device and an app that actually works at the system level.
Ready to take control of your screen time?
If you're tired of app blockers you can turn off in two seconds, Blok is built for you. The combination of physical NFC activation and system-level blocking means you're not fighting your phone anymore. You're redesigning how you interact with it.
Get Blok today and start building better phone habits with real, physical friction.
Ready to actually put your phone down?
See the Blok Card and how the physical NFC setup works on iPhone and Android.