Jumblo - Mobile Sip calls is a free Android app developed by Finarea. It falls under the category of Social & Communication. With Jumblo, users can make international calls at extremely low rates, making long-distance communication more affordable than ever before.

The app is available on various platforms including smartphones, Windows computers, Mac computers, and allows for direct calling through local access numbers. Users can also make web calls through the Jumblo website. With unbeatable quality and prices, Jumblo brings its services to smartphones for the first time.

It is important to note that using Jumblo as a default dialer may interfere with dialing 911 emergency services. However, for those looking to save on international calls, Jumblo - Mobile Sip calls offers a convenient and cost-effective solution.