Well, in the FAQ's I found that exiftool may be installed and used on android.
But how?
Which FAQ are you looking at? Because the word "Android" doesn't appear at all on the FAQ Page (https://exiftool.org/faq.html).
There was a recent post mentioning an Android gui, which can be found here (https://play.google.com/store/apps/details?id=ru.al.exiftool&hl=en_US) in the google play store.
Just so you know, it's not something created by Phil. To quote: "There's an Exiftool android app? (https://exiftool.org/forum/index.php/topic,9039.msg46612.html#msg46612)"