Apps like FRITZ!App Fon

Here are some great alternatives to FRITZ!App Fon by AVM GmbH :
BoxToGo
BoxToGo
★3.4
BoxToGo Pro
BoxToGo Pro
★5.0
Smartphone Connect
Smartphone Connect
★3.7
Sipdroid
Sipdroid
★3.3
Talk360: International Calling
Talk360: International Calling
★4.3
Blue Call - Global WiFi Call
Blue Call - Global WiFi Call
★3.5
TrueCall - Global WiFi Call
TrueCall - Global WiFi Call
★4.0
Call Now - Privacy number
Call Now - Privacy number
★4.1
WeCall - Global WiFi Calling
WeCall - Global WiFi Calling
★3.8
TouchCall - Global Calling
TouchCall - Global Calling
★4.2
CWB Communicator
CWB Communicator
★3.4
ANY CALL
ANY CALL
★3.8
AbTalk Call - Worldwide Call
AbTalk Call - Worldwide Call
★4.2
Tele Now - Private Number
Tele Now - Private Number
★4.1
2nd Phone Number - Call & Text
2nd Phone Number - Call & Text
★4.1
BOSS Revolution: Calling App
BOSS Revolution: Calling App
★4.7