# C vs Modus RFID+

The clearest difference is update cadence: Modus RFID+ at every 3 months against C's every 10 months. Modus RFID+ also leads on iOS requirement (16.4 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

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

C ships an update every 10 months, Modus RFID+ every 3 months. The most recent releases landed on June 1, 2026 and July 28, 2026 respectively.

## The numbers

| Metric | C | Modus RFID+ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/c-cat/id1094866022/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 3 months** |
| Monetization | Free | — |
| Size | 3 MB | 189 MB |
| Requires iOS | 18.0 | **16.4** |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sierra Innotek, Inc.](https://appshunter.io/developer/1094866021) | [InTech Software Solutions Inc](https://appshunter.io/developer/1608959502) |

## What reviewers say

### C

[App page](https://appshunter.io/ios/app/c-cat/id1094866022)

This utility app allows users to remotely manage and configure settings for specific devices. It provides a centralized interface for adjusting parameters and controlling device functions.

**Highlights:** Device parameter control, Remote configuration, Centralized interface, SSG device management

**In-app purchases:** none


### Modus RFID+

[App page](https://appshunter.io/ios/app/modus-rfid-plus/id1615087874)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is C free?

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

### Is Modus RFID+ free?

Modus RFID+ is free to download, with no in-app purchases.

### Do C or Modus RFID+ have ads?

Neither C nor Modus RFID+ shows ads.

### Which is updated more often, C or Modus RFID+?

C ships an update every 10 months, and Modus RFID+ every 3 months. Most recently, C was updated on June 1, 2026 and Modus RFID+ on July 28, 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.*