What hidden personal information is stored in APK files?

Question

Android

Does it store any personal information when building an Apk file? For example, if the build happens like this: `ndk-build + ant release`. Such as the IP address of the computer building the APK, mac address, hardware serial numbers, environment variables, etc. Or is it all myths?

Answer 1

They do not store anything, I did not see it in APK, or in DEX, or in ELF.
What other myths? Is it a question of whether God exists or not?
There are specifications for all formats and there are tools that allow you to parse them to each byte, if in doubt, then do this work and that's it, do something worthwhile at the same time, another tool like elfedit or gdb will also not hurt, primarily for reverse engineering, although there are such means, they are scarce and they are not superfluous and ideal either.