On one hand I think Apple and Google should drop this, and never should have hosted it. On the other hand I disagree with your assesment that “every little bit helps.” Too often these largely symbolic acts do little more than assuage guilt, they don’t improve anyone’s life. Think of it this way, if you’re riddled with cancer, and I offer you a single dose of chemo, you might reasonably complain that I’ve done nothing for you. If I then shrugged and said that at least I tried, and every little bit helps, you’d be well within your rights to laugh in my face.
Sometimes helping just a very little bit is as good as doing nothing, or even worse, because doing nothing at least is unequivocal in terms of moral culpability. In this case we’re talking about Saudi Arabia, a country with vast riches because we all buy their oil and kiss their asses. It’s like my government (U.K.) crying about Yemen while selling the Saudis more weapons.
Helping is a good idea, we shouldn’t host these apps, shouldn’t sell them weapons, and frankly shouldn’t dare to pat ourselves even slightly on the back for it.