# SLAB: NFC App Blocker — Screen time, locked by a tag

> Screen time, locked by a tag (iPhone/iPad app by Xavier Nehme.)

- Source: https://appshunter.io/ios/app/slab-nfc-app-blocker/id6810494775 (this page in markdown: same URL + `.md`)
- Developer: [Xavier Nehme](https://appshunter.io/developer/6786144175)
- Category: Productivity, Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 2 MB
- Languages: American English
- Released: 2026-09-23
- Data updated: 2026-10-24

## What is SLAB?

SLAB shields the apps that eat your time until you tap your iPhone on a physical NFC tag.

Pick the apps, categories, or websites. Tap Block. They are blocked behind Apple's Screen Time shield, at system level, even when SLAB is closed, even after a restart. The only way back in is scanning the tag you paired. Leave it in another room and the apps stay shut. Distance is the feature.

PRESETS
Keep more than one block list. Work, Sleep, Deep focus. Switch before you block.

TAP TO BLOCK
Add the Block action to a Shortcuts NFC automation and a single tap on your tag shields everything. Unlocking always happens in the app, where the tag is verified.

FIVE EMERGENCY UNLOCKS
For life. The counter never resets. The slab is the intended way out.

WIDGET AND LOCK SCREEN
See bricked or open at a glance, with a running timer and your weekly total.

NOTHING LEAVES YOUR PHONE
No account, no analytics, no network. SLAB never learns which apps you chose; Apple hands it opaque tokens only.

Any NFC tag works: a sticker, a transit card, a hotel key. Requires an iPhone with NFC tag reading and iOS 17 or later.

## Is SLAB safe?

Not enough ratings yet to assess SLAB.

## Is SLAB legit?

SLAB: NFC App Blocker has limited verification signals. The AppsHunter Legitimacy Score for SLAB is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 5 releases)

### 1.5 — 2026-10-24

A weekly leaderboard in Friends. See who blocked the most this week, you included. It starts fresh at the beginning of every week.

Your weekly totals now follow the calendar week too, so the widget, the stats and the Sunday report all match up.

### 1.4.1 — 2026-10-21

You no longer need an NFC tag in your hand to get started. Finish setup, choose what gets blocked, and pair a slab whenever one turns up.

### 1.4 — 2026-10-14

Friends, rebuilt. Send a request and they decide whether to accept, so nobody sees your status without saying yes. Find people already in your contacts, with your number scrambled on your phone and never stored. Get a notification when someone asks or accepts.

Schedules. Block automatically at the same time each week. Getting back in early still means tapping your slab.

### 1.3 — 2026-10-02

Say what the session is for and set a target. See it on the lock screen and Dynamic Island while blocked. A Sunday report with your week, a streak on the app icon, and a card to share. Friends: swap codes and see whether each other is blocked or open, off by default. The button is now called Block.

### 1.2 — 2026-09-24

No release notes.

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-24.*