# IOmeter vs Kundenklingel

The clearest difference is iOS requirement: IOmeter at 15.0 against Kundenklingel's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

IOmeter ships an update monthly, Kundenklingel every 5 weeks. The most recent releases landed on October 24, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | IOmeter | Kundenklingel |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 5 weeks |
| Size | 41 MB | 19 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [IOmeter GmbH](https://appshunter.io/developer/1644126993) | [NetCom Solutions GmbH](https://appshunter.io/developer/1815706791) |

## What reviewers say

### IOmeter

[App page](https://appshunter.io/ios/app/iometer/id1644126991)

**In-app purchases:** none


### Kundenklingel

[App page](https://appshunter.io/ios/app/kundenklingel/id6746194576)

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

**In-app purchases:** none


## Frequently asked questions

### Is IOmeter free?

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

### Is Kundenklingel free?

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

### Do IOmeter or Kundenklingel have ads?

Neither IOmeter nor Kundenklingel shows ads.

### Which is updated more often, IOmeter or Kundenklingel?

IOmeter ships an update monthly, and Kundenklingel every 5 weeks. Most recently, IOmeter was updated on October 24, 2026 and Kundenklingel on October 26, 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.*