Comparison

Castel SIP vs ECN Softphone

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

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.

Highlights
  • Audio and video calls
  • IP intercom station integration
  • Remote door opening
  • Address book with favorites
  • Call history
  • Remote commands during calls
Features
Read full description

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.

About

ECN Softphone

Features
Read full description

ECN Softphone is a dynamic and user-friendly application designed to streamline business communication. It offers advanced features such as seamless integration with various business systems, high-quality voice and video calling, and efficient contact management. With ECN Softphone, you can stay connected with your team and clients, whether you're working remotely or on-site, ensuring uninterrupted communication and enhanced productivity for your business.

Screenshots

Castel SIP4 screens
ECN Softphone4 screens

Verdict

The call

The clearest difference is device support: Castel SIP at 3 against ECN Softphone's 1. On price, update cadence, ads and in-app purchases 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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

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

UpkeepUpdate frequency

Castel SIP ships an update every 4 months, ECN Softphone every 3 months. The most recent releases landed on November 1, 2026 and November 12, 2026 respectively.

Scorecard1 real difference ยท 7 level
Castel SIP versus ECN Softphone: the parameters behind the verdict, then further details
ParameterCastel SIPECN Softphone
PriceFreeFree
Positive reviews60.0% of reviewsโ€”
Update frequencyEvery 4 monthsEvery 3 months โ€” better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeโ€”
DevicesiPhone, iPad, iPod โ€” betteriPhone
Requires iOS15.5 โ€” better16.6
Further details โ€” not scored
Size84 MB71 MB
Age rating4+17+
DeveloperCastelElectronic Communications Network (Pty) Ltd

In-app purchases

None

Castel SIP

No in-app purchases

None

ECN Softphone

No in-app purchases

Questions

Is Castel SIP free?
Castel SIP is free to download, with no in-app purchases.
Is ECN Softphone free?
ECN Softphone is free to download, with no in-app purchases.
Do Castel SIP or ECN Softphone have ads?
Neither Castel SIP nor ECN Softphone shows ads.
Which is updated more often, Castel SIP or ECN Softphone?
Castel SIP ships an update every 4 months, and ECN Softphone every 3 months. Most recently, Castel SIP was updated on November 1, 2026 and ECN Softphone on November 12, 2026.

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