Cheap Calls - CosmoVoip is a mobile application designed for Android devices that allows you to save on monthly calling charges by over 80%. Developed by Finarea, this app is free to download and offers cheap rates for international calls through WiFi or 3G networks. You can add new contacts or choose a contact from your regular contact list. If you are already a CosmoVoip user, you can import your contacts from your CosmoVoip client as well.

The app offers a great user interface and provides a clear line with great quality. To start using the app, you just need to download the free CosmoVoip dialer app, register a username or log in using your existing credentials, and buy some credits. It's that simple! However, it's important to note that using the app as a default dialer may interfere with dialing 911 emergency services. With its affordable rates and easy-to-use interface, Cheap Calls - CosmoVoip is a great option for those looking to save on international calls.