# Sentry Interactive vs NFC Reader / Writer

The clearest difference is rating: NFC Reader / Writer at 3.6 against Sentry Interactive's 2.6. Sentry Interactive's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price, review sentiment, ratings volume and update cadence there is nothing between them.

Both are free to download. NFC Reader / Writer sells 1 one-off in-app purchase. Sentry Interactive asks for nothing beyond the download.

NFC Reader / Writer holds the better App Store score, 3.6 against 2.6. Both are backed by a comparable volume of ratings — 14 and 19 respectively. Written reviews point the same way: 13% of Sentry Interactive's written reviews are positive against 16% of NFC Reader / Writer's.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on September 30, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Sentry Interactive | NFC Reader / Writer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.6 (14 ratings)](https://appshunter.io/ios/app/sentry-interactive/id1164433305/reviews) | **[3.6 (19 ratings)](https://appshunter.io/ios/app/nfc-reader-writer/id1286968328/reviews)** |
| Number of ratings | 14 | **19** |
| Positive reviews | 13.3% of reviews | **16.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | Monthly |
| Monetization | **Free** | Free with in-app purchases |
| Size | 44 MB | 5 MB |
| Requires iOS | **15.5** | 18.6 |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Doordeck Limited](https://appshunter.io/developer/1115161254) | [Andrew Sowers](https://appshunter.io/developer/592605673) |

## What reviewers say

### Sentry Interactive

[App page](https://appshunter.io/ios/app/sentry-interactive/id1164433305)

This app allows you to access your office or building with your iPhone or Apple Watch. Share access with others easily and securely using bank-level encryption. Multiple convenient unlock methods are available for quick entry.

**Highlights:** Tap to unlock office access, Share access with email, Apple Watch integration, 2-factor bank-level encryption, Convenient unlock methods, Real-time insights

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### NFC Reader / Writer

[App page](https://appshunter.io/ios/app/nfc-reader-writer/id1286968328)

This utility app allows you to read, save, and share information stored on NFC tags. It can extract data like URLs, contact cards, and text messages. Note that NFC tag reading requires an iPhone 7 or newer.

**Highlights:** Read NFC tags, Save tags for later, Share tag data, Save contacts from tags, Open URLs from tags, Display text messages

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |

**What reviewers like**

- ✅ Works well for NFC reading on compatible devices
- 👍 Nice, clean user interface design
- 🎯 Effective for product traceability and information display
- 💪 Reliable performance on iPhone 7 and newer models
- 🔧 Useful for reading various NFC tag types and formats

**What reviewers complain about**

- 🐛 App crashes on startup for unsupported devices
- ❌ Inconsistent NFC reading functionality across devices
- 📱 Limited compatibility - only works on iPhone 7+
- 😕 Poor documentation and unclear instructions
- ⚠️ Misleading compatibility information in app store

**Reported bugs**

- App crashes immediately on launch for devices without NFC support
- NFC reading fails on iPhone 6, 6S, and SE despite claimed compatibility
- Session invalidated - feature not supported error messages
- Apple Pay popup appears when scanning NFC tags
- Unreadable symbols displayed on screen during scanning

**Requested features**

- Support for older iPhone models (iPhone 6, 6S, SE)
- Ability to open amiibo files from Google Drive
- Italian language support
- Better error handling and user notifications
- Support for writing NFC tags on all compatible devices


## Frequently asked questions

### Is Sentry Interactive free?

Sentry Interactive is free to download, with no in-app purchases.

### Is NFC Reader / Writer free?

NFC Reader / Writer is free to download, with in-app purchases available.

### Which has better reviews, Sentry Interactive or NFC Reader / Writer?

NFC Reader / Writer is rated higher. Sentry Interactive averages 2.6 out of 5 from 14 ratings, while NFC Reader / Writer averages 3.6 from 19 ratings.

### Do Sentry Interactive or NFC Reader / Writer have ads?

NFC Reader / Writer shows ads; Sentry Interactive does not.

### Which is updated more often, Sentry Interactive or NFC Reader / Writer?

Sentry Interactive ships an update monthly, and NFC Reader / Writer monthly. Most recently, Sentry Interactive was updated on September 30, 2026 and NFC Reader / Writer on October 6, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*