I’ve had one of these book study stands for years. And though I usually have my iPad in its Apple case, this stand works fine for propping my iPad up when it’s not in a case.
But if price is a factor, this book study stand is a quarter the cost shipped. Which means if portability is a factor, you could buy four of these study stands for the price of one Compass and keep one in each room. (And if you buy one using this Amazon link, I’ll get a small kickback.)