# Sentry Interactive vs CS108 RFID Reader

The clearest difference is iOS requirement: CS108 RFID Reader at 11.0 against Sentry Interactive's 15.5. On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

CS108 RFID Reader holds the better App Store score, 2.8 against 2.6. Both are backed by a comparable volume of ratings — 14 and 6 respectively.

Sentry Interactive ships an update monthly, CS108 RFID Reader every 5 weeks. The most recent releases landed on September 30, 2026 and June 5, 2026 respectively.

## The numbers

| Metric | Sentry Interactive | CS108 RFID Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.6 (14 ratings)](https://appshunter.io/ios/app/sentry-interactive/id1164433305/reviews) | **[2.8 (6 ratings)](https://appshunter.io/ios/app/cs108-rfid-reader/id1225904974/reviews)** |
| Number of ratings | **14** | 6 |
| Positive reviews | 13.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 5 weeks |
| Monetization | Free | Free |
| Size | 44 MB | 51 MB |
| Requires iOS | 15.5 | **11.0** |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Doordeck Limited](https://appshunter.io/developer/1115161254) | [CSL](https://appshunter.io/developer/1225904973) |

## 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


### CS108 RFID Reader

[App page](https://appshunter.io/ios/app/cs108-rfid-reader/id1225904974)

This utility app demonstrates the capabilities of the CS108 RFID reader. Users can explore its functions and access the source code for further development on the developer's website.

**Highlights:** RFID reader function demonstration, Source code access, Utility for developers, Cross-device compatibility

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sentry Interactive free?

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

### Is CS108 RFID Reader free?

CS108 RFID Reader is free to download, with no in-app purchases.

### Which has better reviews, Sentry Interactive or CS108 RFID Reader?

CS108 RFID Reader is rated higher. Sentry Interactive averages 2.6 out of 5 from 14 ratings, while CS108 RFID Reader averages 2.8 from 6 ratings.

### Do Sentry Interactive or CS108 RFID Reader have ads?

Neither Sentry Interactive nor CS108 RFID Reader shows ads.

### Which is updated more often, Sentry Interactive or CS108 RFID Reader?

Sentry Interactive ships an update monthly, and CS108 RFID Reader every 5 weeks. Most recently, Sentry Interactive was updated on September 30, 2026 and CS108 RFID Reader on June 5, 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.*