Minecraft PE privacy policy:
BlockLauncher collects account information to allow autocompleting Xbox Login details. The information is only used for Xbox login. The Xbox Login functionality's privacy policy can be found at https://privacy.microsoft.com/en-us/privacystatement
Some anonymous information is collected and sent to Mojang to improve Minecraft PE: Mojang's privacy policy can be found at https://account.mojang.com/terms#privacy
Skins privacy policy:
When uploading a skin, this site only store the skin itself, your username, and your IP address (for diagnostic purposes). This information is not shared with third parties. We do not store any passwords or e-mails submitted: they are just used temporarily to verify who you are.
Kamcord privacy policy:
https://www.kamcord.com/privacy/
AdMob privacy policy: