# RDS vs C

The clearest difference is update cadence: C at weekly against RDS's every 3 months. 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.

RDS ships an update every 3 months, C weekly. Both last shipped on October 11, 2026.

## The numbers

| Metric | RDS | C |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rds-32/id1623034787/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | Free | — |
| Size | 49 MB | 11 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mirion Technologies, Inc.](https://appshunter.io/developer/561534087) | [Mickael MAYEUR](https://appshunter.io/developer/1689398025) |

## What reviewers say

### RDS

[App page](https://appshunter.io/ios/app/rds-32/id1623034787)

This utility app connects to a radiation survey meter, displaying real-time data and allowing parameter adjustments. It also integrates with supervision services for enhanced monitoring.

**Highlights:** Connect to RDS-32 survey meter, Display real-time device data, Edit setpoints and parameters, Connect to RadResponder, Connect to Spirview Mobile

**Features:** macOS Compatibility

**In-app purchases:** none


### C

[App page](https://appshunter.io/ios/app/c-linkco/id6468590859)

**In-app purchases:** none


## Frequently asked questions

### Is RDS free?

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

### Is C free?

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

### Do RDS or C have ads?

Neither RDS nor C shows ads.

### Which is updated more often, RDS or C?

RDS ships an update every 3 months, and C weekly. Most recently, RDS was updated on October 11, 2026 and C on October 11, 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.*