# DUSphone vs KALER Clients

The clearest difference is update cadence: KALER Clients at daily against DUSphone's every 10 days. KALER Clients also leads on iOS requirement (15.1 vs 17.0). 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.

DUSphone ships an update every 10 days, KALER Clients daily. The most recent releases landed on October 7, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | DUSphone | KALER Clients |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (3 ratings)](https://appshunter.io/ios/app/dusphone/id498522414/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 days | **Daily** |
| Monetization | Free | — |
| Size | 11 MB | 33 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [dus.net GmbH](https://appshunter.io/developer/381540677) | [Darius Kaler](https://appshunter.io/developer/1895497273) |

## What reviewers say

### DUSphone

[App page](https://appshunter.io/ios/app/dusphone/id498522414)

This VoIP softphone allows you to make encrypted, HD-quality calls to landlines, mobile numbers, and other lines directly from your iPhone. It offers seamless integration with your device and ensures your conversations remain private. Manage multiple lines and keep track of your prepaid balance with ease.

**Highlights:** Encrypted calling (TLS/SRTP), HD voice quality (Opus codec), Native call integration (Apple CallKit), Reliable incoming calls (VoIP push), Call landlines and mobile numbers, Multi-account management, Caller ID management

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

**In-app purchases:** none


### KALER Clients

[App page](https://appshunter.io/ios/app/kaler-clients/id6801319947)

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

**In-app purchases:** none


## Frequently asked questions

### Is DUSphone free?

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

### Is KALER Clients free?

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

### Do DUSphone or KALER Clients have ads?

Neither DUSphone nor KALER Clients shows ads.

### Which is updated more often, DUSphone or KALER Clients?

DUSphone ships an update every 10 days, and KALER Clients daily. Most recently, DUSphone was updated on October 7, 2026 and KALER Clients on October 10, 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.*