Is there a calling app that make you call for free without minutes?
No but textfree is a great app that requires minutes. They can be bought or earn by watching vids or downloading apps.
Yep it called TANGO
There are several applications that you can use for calling that are free. Some of them include Bobsled Calling, textPlus Free Calls and netTALK. You can visit the site http://www.androidauthority.com/top-best-free-calls-android-phones-voip-19829/ to see others.