It's a fair point; the difference, my counter-point, if you will, is that F.lux is free. If F.lux's claims prove to be false, then at worst, the application is

It's a fair point; the difference, my counter-point, if you will, is that F.lux is free. If F.lux's claims prove to be false, then at worst, the application is misguiding or misinforming. Lumosity, on the other hand, is outright fraudulent, if their claims are proven wrong and continue to profit off of it.