The instructions for a tool to move WhatsApp messages from Android to iOS say that I need to install:
* `Whatsapp.ipa` of the same version (google will help)
Whatsapp.ipa appears to be the app itself. How do I locate it? After backing up an iPhone using iTunes on a Mac, only the data seem to be in
~/Library/Application Support/MobileSync/Backup (with coded filenames). The apps do not seem to be there (as would be expected; that would be wasted storage).
A comment below this answer suggests that it's somewhere under
> find ~/Library/Group\ Containers -name "*what*" -print
(I'm working my way through this problem.)