Alright, I keep postponing this, so I'll just do it now.
A fan (Winter) sent me this APK file, saying that he repacked Witch Trainer for modern phones. He also mentioned that he fixed some minor glitches, like the fireplace fire displaying on top of Hermione and one broken CG in the ending of the game, along with a few other small issues. He did say that he hasn't fully tested the game himself.
On my end, I want to say that I haven't tried running this APK myself, but I'm about 95% sure it's legit.
If some of you have some free time on your hands, could you test this repack and let me know if it works as intended? I'd really appreciate it.
If everything checks out, I can upload it to itch.io later and make it the official Witch Trainer APK for modern phones.
That's all.