SLAB: NFC App Blocker is a productivity app developed by Xavier Nehme.
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App Information
SLAB: NFC App Blocker is freely available from the App Store. The app size is 2.11 MB. The latest version available is 1.6. The last update was on November 4, 2026.
Technical Requirements
The app has a content rating of Everyone. The app has been available on the App Store since September 2026.
SLAB: NFC App Blocker is made and published by
Xavier Nehme.
AppBrain is an independent app data site and isn't affiliated with Xavier Nehme.
The app name, icon, screenshots and description belong to Xavier Nehme and are shown as published on the App Store.
Description by Xavier Nehme(from the App Store)
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.
Each subscription will automatically renew 3 days before the expiration date for
the same time period. Subscriptions can be cancelled at any time before the renewal.
