# CENFC vs CatKey

The clearest difference is in-app purchases: CENFC at none against CatKey's 1. CENFC also leads on update cadence (every 3 days vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. CatKey sells 1 one-off in-app purchase. CENFC asks for nothing beyond the download.

CENFC ships an update every 3 days, CatKey every 2 months. The most recent releases landed on October 6, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | CENFC | CatKey |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/cenfc/id6760399948/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 2 months |
| Monetization | Free | — |
| Size | 9 MB | 4 MB |
| Requires iOS | **16.0** | 17 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [子衎 王](https://appshunter.io/developer/1710838888) | [贺 周](https://appshunter.io/developer/1815397078) |

## What reviewers say

### CENFC

[App page](https://appshunter.io/ios/app/cenfc/id6760399948)

This advanced toolkit allows you to scan, identify, and analyze NFC tags directly on your device. It supports various NFC protocols, enables memory dumping, and allows for reading and writing NDEF messages. Additionally, it can read electronic passports and offers raw communication capabilities for developers.

**Highlights:** NFC tag scanning and identification, Full NFC tag memory dumping, NDEF message creation, reading, and writing, Electronic passport (eMRTD) reader, Raw APDU command communication, Protocol analysis tools (Hex Converter, CRC Calculator)

**In-app purchases:** none


### CatKey

[App page](https://appshunter.io/ios/app/catkey/id6784041022)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CatKey Pro | $3.99 | one-time |


## Frequently asked questions

### Is CENFC free?

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

### Is CatKey free?

CatKey is free to download, with in-app purchases available.

### Do CENFC or CatKey have ads?

Neither CENFC nor CatKey shows ads.

### Which is updated more often, CENFC or CatKey?

CENFC ships an update every 3 days, and CatKey every 2 months. Most recently, CENFC was updated on October 6, 2026 and CatKey on October 4, 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.*