Unfortunately, I'm on Android now. This means that I can't really add apps to the applevis directory since I can't give accurate ratings.
However, I figured I'd give a list of games for you all to try to see about accessibility on iOS.
Hangtime provides three chances for games. 2 PM eastern, 6 PM eastern, and 10 PM eastern.
Like HQTrivia, but part of swagBucks. I remember the swagBucks app being hit or miss, so not sure on that one.
Not accessible on Android, though I did reach out to the developer, who does respond unlike HQ. They offer three games. Quizzo, similar to HQ, Music Mania, guess the song and more in-depth questions, and Trivia Crush, like HQ, but with a timer noting how long it takes you to answer a question. additionally, one has to "make the cut" before getting to the money questions.
Inaccessible on both platforms, but perhaps we can do some digging and find some developer contacts.
Okay, that's all I got. Speaking of Trivia, HQ's new HQ Sports show is on and about to start, so I'm gonna go try my hand at it!