# IP Commander for iOS vs Castel SIP

The clearest difference is update cadence: IP Commander for iOS at every 5 weeks against Castel SIP's every 4 months. IP Commander for iOS also leads on iOS requirement (5.1.1 vs 15.5). Castel SIP's advantage is review sentiment (60% vs 50%) and device support (3 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

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

IP Commander for iOS ships an update every 5 weeks, Castel SIP every 4 months. The most recent releases landed on October 29, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | IP Commander for iOS | Castel SIP |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/ip-commander-for-ios/id551710758/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 50.0% of reviews | **60.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 4 months |
| Monetization | Free | Free |
| Size | 37 MB | 84 MB |
| Requires iOS | **5.1.1** | 15.5 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [TECOM CO., LTD.](https://appshunter.io/developer/490537952) | [Castel](https://appshunter.io/developer/566301834) |

## What reviewers say

### IP Commander for iOS

[App page](https://appshunter.io/ios/app/ip-commander-for-ios/id551710758)

This app allows you to make and receive phone calls from your iPad using a compatible VoIP service. It offers features like call forwarding, conferencing, and integration with your iPad's address book for convenient communication.

**Highlights:** Make and receive HD voice calls, Call forwarding and conferencing, Integrates with iPad address book, Programmable buttons, Background operation support, Call history and voicemail indicator

**Features:** macOS Compatibility

**In-app purchases:** none


### Castel SIP

[App page](https://appshunter.io/ios/app/castel-sip/id566301831)

This application functions as a SIP intercom softphone, enabling users to make and receive audio and video calls from IP intercom stations on their mobile devices. It allows for communication and remote door opening, working through Wi-Fi and cellular data networks.

**Highlights:** Audio and video calls, IP intercom station integration, Remote door opening, Address book with favorites, Call history, Remote commands during calls

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is IP Commander for iOS free?

IP Commander for iOS is free to download, with no in-app purchases.

### Is Castel SIP free?

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

### Do IP Commander for iOS or Castel SIP have ads?

Neither IP Commander for iOS nor Castel SIP shows ads.

### Which is updated more often, IP Commander for iOS or Castel SIP?

IP Commander for iOS ships an update every 5 weeks, and Castel SIP every 4 months. Most recently, IP Commander for iOS was updated on October 29, 2026 and Castel SIP 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.*