If your friend is in Germany and sitting on the internet, tell him to call you and save your money.
If you are in Germany then call your friends for free and save your money.
With Peterzahlt, you can call these destinations for free, name of the countries are in German
Australien (+61)
Belgien (+32)
China (+86)
Dänemark (+45)
Deutschland (+49)
Finnland (+358)
Frankreich (+33)