App Developer Needed

We are a company looking to develop an app. below you'll find our spec. ideas The app is a digital version of a card product soon to be launched. This is a deck of generically put "divination cards" where there are 44 cards each representing a different explanation. The theme is highway/traffic signs. The idea for the app is that beyond a menu screen the primary function would be: 1. to swipe your finger to start moving a simply animated car down a road with road signs representing the cards on either side of the road. in a quick motion blurred manner. [login to view URL] user would tap the screen to end the sequence resulting in the car randomly stopping next to one of the signs. The sign would then animate to a card and be the primary focus of the screen and would have the explanation of the sign on the card. The card could then be tapped to have an animation of the sign/card being flipped over to have the deeper meaning of the card. It would be very important that the sign selection be random and NOT have all the cards cycled through before a previously selected card can be selected again. It is very important that the selection be random save the element of the user stopping the blurry road sequence. Other features that we'd like to incorporate. (if the cost if feasible) 1. A journal function. typing in a question which is incorporated into a “journal entry” that allows the user to at the end of the sequence have their question, sign selected, option to write notes and time stamp, saved to their journal. With ability to access journal from menu and option to email journal entries. [login to view URL] link on menu What factors and costs are there to consider when creating this app to be able to have it on multiple platforms, iphone, itouch, ipad, android etc. ? Our primary focus for now is on Apple products but may like the option to expand to another platform if it is cost effective. I am sure there are many more questions to answer and at this time are looking for rough bids to consider feasibility. Thank you and please don't hesitate to contact me with any questions you are bound to have Thank you in advance