Its been long time since we gave you something. Today I came across another free app which is currently giving away free International calling minutes. Also they have some cheap call rates if you are interested for long term solution.
It is known as Libon. Free on Android and IOS. As soon as you install the app and verify your phone number with it you will be given 30 call out minutes.
It doesn't look like a bad app at all. Like any other app it has all the facilities. Now with free minutes it is a good time to give it a try.
Download from https://www.libon.com/