Question: What languages does Max Payne support?  How do I switch languages?  Are there different versions are are all the languages in all versions?

Answer: There is only one version (SKU) of Max Payne for iOS and one for Android.  This worldwide version supports English, French, Italian, German, Spanish, and Japanese.  

To change language, go to Options->Language and then select the desired language.  Then save the new setting.