Absolutely amazing so far.
Was looking for a discord page to message you silently with this, can just delete after you reply if you want though.
[SPOILERS]
Had an idea for another level of "meta". When you go to make your guess about who is the other gamer, it catches you if you try to reload. However it can be bypassed by clearing the cache (on mobile). Would be cool if you just quickly at the beggining of the game or something populated the cache with 1 item. Then you could check for an empty cache when the player guesses and call the player out for trying to cheat their way around.
Of course people could still just go find the file, or if they know this method, they could find out where you first added the item to make it non-empty. But it would judt be a fun Easter egg for people who try a super basic approach like i did.