# Open Blocker: NFC App Blocker — Physical key lock, open source

> Physical key lock, open source (iPhone/iPad app by Finn Jennen.)

- Source: https://appshunter.io/ios/app/open-blocker-nfc-app-blocker/id6824046126 (this page in markdown: same URL + `.md`)
- Developer: [Finn Jennen](https://appshunter.io/developer/6824046128)
- Category: Productivity, Lifestyle
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 16.0 · 3 MB
- Languages: American English
- Released: 2026-10-26
- Data updated: 2026-11-01
- User reviews in markdown: https://appshunter.io/ios/app/open-blocker-nfc-app-blocker/id6824046126/reviews.md

## What is Open Blocker?

Lock distracting apps until you scan a key you already own. Open source, no ads.

Pick the apps that pull you in and start a block. They stay locked until you scan your key.

Your key can be:
• A card you carry. Many transit cards, hotel keys and work badges work.
• An NFC sticker
• A QR code you print
• A barcode, like the one on a book

Also:
• Modes for deep work, sleep and family time
• Schedules that start a block for you
• 5 emergency unblocks every 6 months for when your key is out of reach

No account. No ads. Your keys and app choices stay on your phone.

Built on Apple's Screen Time framework. The only data sent is an anonymous count of completed blocks. You can turn it off in Settings.

MIT licensed. Source code: github.com/fjenn/open-blocker

## Is Open Blocker safe?

Not enough ratings yet to assess Open Blocker.

## Is Open Blocker legit?

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

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/open-blocker-nfc-app-blocker/id6824046126/reviews.md

### 5/5 — Hotel key

*2026-10-27*

This is great, I’ve been using two old hotel keys for a while now as my blockers. I have one taped to my desk and the other I carry with me for uni and coffee shop work sessions. Great app

## Version history (last 3 releases)

### 1.0.3 — 2026-10-31

Open Blocker now has a clearer name in the App Store. Setting up an NFC sticker now takes a single scan. Tapping anywhere on a key's name box now opens the keyboard. After a few unlocks with your key, you may be asked to rate the app. Small fixes and improvements.

### 1.0.1 — 2026-10-27

Your physical key now always ends a scheduled block right away. Holding to start a block is more forgiving if your finger moves a little. Contact & feedback now opens our feedback page. Small fixes and improvements.

### 1.0.0 — 2026-10-27

No release notes.

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*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 2026-11-01.*