# Castel SIP vs Orion Intercom

The clearest difference is update cadence: Castel SIP at every 4 months against Orion Intercom's every 38 months. Orion Intercom's advantage is iOS requirement (13 vs 15.5). 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.

Castel SIP ships an update every 4 months, Orion Intercom every 38 months. The most recent releases landed on June 9, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | Castel SIP | Orion Intercom |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 38 months |
| Monetization | Free | — |
| Size | 84 MB | 10 MB |
| Requires iOS | 15.5 | **13** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Castel](https://appshunter.io/developer/566301834) | [GST Elektronik A.S.](https://appshunter.io/developer/1266665855) |

## What reviewers say

### 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


### Orion Intercom

[App page](https://appshunter.io/ios/app/orion-intercom/id1587907914)

**In-app purchases:** none


## Frequently asked questions

### Is Castel SIP free?

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

### Is Orion Intercom free?

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

### Do Castel SIP or Orion Intercom have ads?

Neither Castel SIP nor Orion Intercom shows ads.

### Which is updated more often, Castel SIP or Orion Intercom?

Castel SIP ships an update every 4 months, and Orion Intercom every 38 months. Most recently, Castel SIP was updated on June 9, 2026 and Orion Intercom on September 12, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*