# HP arms vs CAEN RFID easyController

The clearest difference is update cadence: CAEN RFID easyController at every 2 months against HP arms's every 6 months. HP arms's advantage is iOS requirement (12.0 vs 18.6). 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.

HP arms ships an update every 6 months, CAEN RFID easyController every 2 months. The most recent releases landed on September 15, 2026 and February 20, 2026 respectively.

## The numbers

| Metric | HP arms | CAEN RFID easyController |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 months** |
| Size | 45 MB | 36 MB |
| Requires iOS | **12.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Renishaw plc](https://appshunter.io/developer/943016056) | [CAEN RFID](https://appshunter.io/developer/1437904067) |

## What reviewers say

### HP arms

[App page](https://appshunter.io/ios/app/hp-arms/id1441014006)

**Features:** macOS Compatibility

**In-app purchases:** none


### CAEN RFID easyController

[App page](https://appshunter.io/ios/app/caen-rfid-easycontroller/id1612236508)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is HP arms free?

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

### Is CAEN RFID easyController free?

CAEN RFID easyController is free to download, with no in-app purchases.

### Do HP arms or CAEN RFID easyController have ads?

Neither HP arms nor CAEN RFID easyController shows ads.

### Which is updated more often, HP arms or CAEN RFID easyController?

HP arms ships an update every 6 months, and CAEN RFID easyController every 2 months. Most recently, HP arms was updated on September 15, 2026 and CAEN RFID easyController on February 20, 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.*