# BITZER Electronics ServiceTool vs Castel Selector

BITZER Electronics ServiceTool and Castel Selector are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

BITZER Electronics ServiceTool ships an update every 2 months, Castel Selector every 6 weeks. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | BITZER Electronics ServiceTool | Castel Selector |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/bitzer-electronics-servicetool/id1437610638/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | Free | — |
| Size | 249 MB | 26 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BITZER SE](https://appshunter.io/developer/1224090796) | [Castel S.r.l.](https://appshunter.io/developer/1554507062) |

## What reviewers say

### BITZER Electronics ServiceTool

[App page](https://appshunter.io/ios/app/bitzer-electronics-servicetool/id1437610638)

This utility app allows users to connect to BITZER IQ products via Bluetooth for device configuration, operation monitoring, and alarm viewing. It also enables log retrieval, visualization, and cloud uploading for storage and sharing.

**Highlights:** Bluetooth connectivity, Device configuration, Operation monitoring, Alarm viewing with help texts, Log retrieval and visualization, Cloud data uploading

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

**In-app purchases:** none


### Castel Selector

[App page](https://appshunter.io/ios/app/castel-selector/id1556397437)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is BITZER Electronics ServiceTool free?

BITZER Electronics ServiceTool is free to download, with no in-app purchases.

### Is Castel Selector free?

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

### Do BITZER Electronics ServiceTool or Castel Selector have ads?

Neither BITZER Electronics ServiceTool nor Castel Selector shows ads.

### Which is updated more often, BITZER Electronics ServiceTool or Castel Selector?

BITZER Electronics ServiceTool ships an update every 2 months, and Castel Selector every 6 weeks. Most recently, BITZER Electronics ServiceTool was updated on October 29, 2026 and Castel Selector on October 25, 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.*