# DUSphone vs INOSOFT

The clearest difference is update cadence: DUSphone at weekly against INOSOFT's every 2 months. INOSOFT's advantage is iOS requirement (14.0 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 weekly, INOSOFT every 2 months. The most recent releases landed on September 19, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | DUSphone | INOSOFT |
| --- | --- | --- |
| 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 | **Weekly** | Every 2 months |
| Monetization | Free | — |
| Size | 11 MB | 5 MB |
| Requires iOS | 17.0 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [dus.net GmbH](https://appshunter.io/developer/381540677) | [INOSOFT AG](https://appshunter.io/developer/474760036) |

## 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


### INOSOFT

[App page](https://appshunter.io/ios/app/inosoft/id1553039636)

**In-app purchases:** none


## Frequently asked questions

### Is DUSphone free?

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

### Is INOSOFT free?

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

### Do DUSphone or INOSOFT have ads?

Neither DUSphone nor INOSOFT shows ads.

### Which is updated more often, DUSphone or INOSOFT?

DUSphone ships an update weekly, and INOSOFT every 2 months. Most recently, DUSphone was updated on September 19, 2026 and INOSOFT on September 18, 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.*