0044 Free International Calls is an Android application that allows users to make international calls to 20 countries without paying the cost of international calls. Developed by ip4 Networks Inc., this app guarantees quality connections to countries such as the US, China, and Canada. The app is free to use and does not have any additional international calling charges. After using the free fountain, only the domestic call rate will be charged.

To make a call, select the country on the keypad, enter the local phone number, and press the call button. Alternatively, you can call directly from the Recent/Contacts menu. You can also manage frequently used international phone numbers separately.

It is important to note that the app requires phone permission for normal calls and address book permission to synchronize the address book stored in the phone. Users who have subscribed to the unlimited voice/data plan of each carrier should check the free fraction of 'additional calls.' Finally, it is worth mentioning that unlimited use is available only when the other party's number starts with specific numbers, which are listed in the app.