I bought Path to Mnemosyne on the Nintendo Switch first. I was afraid it was going to be more of a horror game than I am comfortable with, but it’s pretty restrained. (Way too scary for kids, though!) But I really loved it. I discovered there was an iOS version, and was shocked to see the reviews were so negative.
I don’t understand the complaints about controls. You use your left thumb to run forward and back, rotate the world, and hit switches. You use your right thumb to jump. It is a very standard mobile gaming approach.
The visuals and sound are identical to the console version. At first I thought there was a bug - I don’t get any sound without headphones. But that may be because I have my phone mute switch on.
Some of the puzzles are a bit fiddly, and I am still getting stuck on the warp holes, but in general it’s not too challenging. I haven’t needed any puzzles spoiled by walkthroughs. If you get stuck and don’t know what to do, try walking back. Further back. Keep going. See anything interesting?
If you like beautiful, hand-drawn games with a creepy but not overtly scary theme, and eerie and effective sound design, brain-tickling puzzles, and an interesting if somewhat unfulfilling plot, you should give this a try. It deserves so much more credit than the App Store crowd has given it so far.