Bad comparison, one thing is to mod an app and release it for public use and another is to hack a corporation and... wait what's the "public" use for hacking a corp to steal files again? lol
You're assuming too much, this app has been modded already, but either the devs(Niantic) ban you or the modder doesn't do public release.
We're here begging for a modder to do a free public release haha
if not root, Fake GPS still works if you are using a version below Monster Hunter Now 61.0 (Monster Hunter Now 60.3). if a pop up appears to update press the cancel button.
if your device is rooted then use smali patcher. works on all versions