Archived App (Last seen on 24 Nov 2025)
This is an archived listing of the app previously available on the App Store.Although the app is no longer distributed by Apple, you can still view its description, screenshots, version history, ratings, and metadata for reference.
About
This application transforms your iPhone into a VoIP phone, enabling cost-effective calls over the internet. It integrates with existing SIP servers, allowing service providers to reach a wider customer base through standard mobile devices connected to the internet.
What's New in CALLJU
2.0
August 31, 2023
Minor Fixes.
Developer apps
FAQ
How does CALLJU work on an iPhone?
CALLJU functions as a softphone on your iPhone, registering with a server to enable authenticated callers to make calls. It leverages your iPhone's internet connection (Wi-Fi/3G/4G) to facilitate these calls.
Who is CALLJU designed for?
CALLJU is primarily intended for service providers who can integrate it with their existing SIP servers. It also benefits individual users by turning their iPhone into a VoIP phone for cheaper calls.
What are the internet requirements for CALLJU?
Your iPhone must be connected to the internet to use CALLJU. This can be through Wi-Fi, 3G, or 4G mobile data connections.
Can I make free calls with CALLJU?
CALLJU enables you to make cheap or even free phone calls over the internet, depending on your service provider's integration and your calling destination.
What devices does CALLJU support?
CALLJU is available for iPhone and iPod devices, offering a simple user interface for making calls.
How often is CALLJU updated?
The latest version of CALLJU is 2.0, and it was last updated on August 31, 2023. This indicates regular maintenance and potential feature additions.
What is the user rating for CALLJU?
CALLJU has a rating of 4.0 stars based on 1 rating. This suggests a generally positive user experience among its current user base.
Does CALLJU have ads?
No, CALLJU does not contain advertisements. The app is free to download and use without any ad interruptions.
