Create App for iOs and Android - open to bidding

I want to create an app game for apple iphones/android phones. The app also should be able to play on ipads/ipods and any google/android tablet. The app game will be monetized eventually. I want to build a download base before creating monetized pathways. The app game will be a rocket game available for any age. The client starts out at level 1 with one rocket, and the rocket needs to launch itself and navigate through astroids and arrive safely at its destination. The game should be navigated with 1 finger using the touch screen of the model(iphone,ipad,android phone or tablet).