Hello!
I personally do not know exactly how this can benefit other children, but
challenges definitely make my kids better and wiser! I started with something
as simple as a mobile platformer: https://itunes.apple.com/en/app/electricity-run-game/id963759829?mt=8 and slowly moved on to more
serious stuffs. Following daily rounds on my Apple devices, the little ones now
have better reflexes, concentration and speed! The best is that it’s all free
and I also find it highly enjoyable! You will spot other titles that can really
stimulate their senses on play.google.com! To boot, here is a list: https://www.pinterest.com/pin/235805730464438713/ that might help in your
quest to find new activities. All the best!