Write an iPhone application -- 2

-please excuse my poor writing but this sums it all up a little more detail is required but this is basically everything )(hello my name is tyrese , music producer looking for more exposure and to sell beats/instrumentals/music)i need someone to create an app to publish to iphone and android users ,its a music app where i post my composed instrumentals and people can download the app it will cost 99 cent(the app will also have a years subscription option and every week i will have to add new musical content) and able to download the audio that i release on the app thru a click of the individual track(some tracks have pricing and have a free trial option. has to have a proffessional look/design i would have to go into more detail on exactly how i would like it to look. with a creative professional look and work simple and user friendly (i will initially have 12 instrumentals on there and every week will add 3 more,in order to get the extra 3 each week for a year the user will have to buy the deluxe package (if you dont get the deluxe pack every instrumental after the initial 12 will cost 99 cent every instrumental there able to listen to by just clicking the track )(i want the purchase process to be fast and easy ) i will be posting 108 instrumentals a year, my bio will have to be on the app as well as exclusive and lease info ,notify them that the tracks are copyrighted .have a inquire page to contact me also a page with all my social media contact info .a artist reward program where there able to send me the finished content and i can post the winner of the month,app will have a youtube /video section where it will have recording tips,songwriting tips,how to be more creative tips and videos ,also a intro page/start page with intro music/video will be a set track,i want a innovative look but simple also on the start page has my motto please contact me for more detail i would like to spend 500$ or under (not rich,just want to get this idea off the ground) create this app also publish to iphone and android )depending on how well you match my vision im willing to give the person who creates this app a small but fair percentage of the income for creating and help me maintain the app (you can contact me on my email - itsayochill-at-gmail