Nope, iOS doesn't let you sideload apps because apple doesn't let you do anything fun.
How old is your Android tablet? Could be a memory issue, I have an old one with only 16gb of storage that's always full, so it slows things down significantly. A lot of the newer tablets have more storage and player pretty decently.
Meanwhile, the app works great on my phone. Just needs a bigger screen to enjoy it. Or could always do a touchscreen laptop.