I would like to develop an Android App for Google Play and I am going to use Facebook and Whatsapp UI as background of the game (as a back-story). I will use icons without copyright to emulate/duplicate the style of Facebook and Whatsapp (they are not part of original drawable of the external app). I will inform the user about the objective of the game. I won't include any direct references to the emulated apps such as the title "Facebook" or "Messenger". The user is free to interpret what he is seeing. I will add the text
"any name and reference is fictitious".
However I have some great doubts:
- After the development, will I be able to upload the app on an app store such as Google Play?
- Is copying UI and layout of other external apps legal?
- Does it break any law or rule?