Castel SIP vs Orion Intercom
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Castel SIP
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.
- Audio and video calls
- IP intercom station integration
- Remote door opening
- Address book with favorites
- Call history
- Remote commands during calls
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Castel SIP App is a SIP intercom softphone. The easy-to-use and intuitive application, allows you to make and receive audio and video calls from IP intercom stations (XELLIP, CAPIP...) on your iPhone or iPad. With Castel SIP App, you can communicate and open the door, anywhere. It works with the Castel Cloud SIP server through Wi-Fi and 3G/4G/5G. Main features: - Audio and video calls with advanced functionalities (Loudspeaker, transfer calls, hold...) - Address book with favorites - Call history - Remote commands during calls and DTMF - Support landscape and portrait mode for all smartphone and tablet designs (camera notch...) Note: Please, check your cellular operator's terms of agreement to make sure they allow SIP calls on their network before using Castel SIP App.
Orion Intercom
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Orion SIP is cloud-based IP intercom service offered by inohom. It is especially designed for buildings, offices, villas and smart homes. Orion external IP intercoms are used at the residential entrance, allowing you to see and communicate with visitors. At home or away from home, you can open doors, monitor building entrances and talk to visitors from your smartphone. inohom Orion offers a unique building entry experience for your technological life. This specially designed service combines with inohom's leading technology to transform your building, office and villa into a technology base. In this way, while maximizing the security of your home, you can also experience the comfort offered by modern technologies. inohom Orion offers you a pioneering experience in building security and communication. To learn more about these innovative solutions from Orion and inohom, please visit https://inohom.com/oriondispaneller.
Screenshots
Verdict
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.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
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.
| Parameter | Castel SIP | Orion Intercom |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 60.0% of reviews | โ |
| Update frequency | Every 4 months โ better | Every 38 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | โ |
| Devices | iPhone, iPad, iPod โ better | iPhone, iPod |
| Requires iOS | 15.5 | 13 โ better |
| Further details โ not scored | ||
| Size | 84 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Castel | GST Elektronik A.S. |
In-app purchases
Castel SIP
No in-app purchases
Orion Intercom
No in-app purchases









