to make it as clear as possible;

I'm in need of an Ad Provider, that runs with Android and iOS (would be best if html5 and windows phone would be included as well), that allows to split the revenue of specific app/game to multiple users, e.g. I'll invite my graphic designer to the project, set up 50% of the revenue for him and he will take care of withdrawing his own part of the income

does anyone know about a platform that offers this? thanks!