Mobile development

I need an iPhone app. I would like it designed and built. The app that I want is a combination of the followings two app. check this app called "tattoo you" ,and features from "pic blender" Flow of my idea> Page one icons : camera - camera roll - we select "camera" take a picture (of any body part) - use photo A)get more/is camera roll ( pictures save on phone ) B)fonts: . Here I want many fonts from this link, there are free [login to view URL] (Typewriter calligraphy , . I need to be able to upload or plug a new font myself, I need instructions). I want all the editing tools from "tattoo you app " so I can do the same in my app c)Roman numerals ( if I type Oct-11, 1971 the app should automatically should write this X-XI, MCMLXXI ) >flow> take picture of arm or upload from phone and then I type Roman numerals on any body part ( please check " tattoo you app " for all editing tools example I can have many layers as I want, and I can click on each one of them to edit if I want . Visit the link below that is what I want [login to view URL] *i need advise if I should use "water mark" on all the pictures for the app example the image was made by peter's app -using theme "a", we take a picture of any body part ( screen say retake / use photo )> we click use photo > then we select "camera roll" >we upload image > we use editing tool like eraser to erase white background , then we click on "icon next to eraser "2 circles " > then on the bottom appears 2 effects "normal and multiply", we select multiply and then we can adjust the contrast ( please use as reference the app pic blender for this flow steps). Now we save the image or share the image or if we want select again "camera roll " and add a second idea of tattoo on the body part ( exactly as pic blender app) *sharing the final picture I want the same as "tattoo you app" please check the app, also . - I want "whatsapp icon "added To the list , on top of Instagram icon ( reference tattoo you app,and pic blender app". -under "contact" using "tattoo you app as reference" , I want an icon that say "sponsors" . I will put the name of my shop/ or banner to pretend I am paying to appear on the app( I want instructions on how upload banners / or a name of another store) - .i was thinking to sell part of the app example 5 free fonts and to unlock the rest of fonts they need to pay me, or the roman numerals to unlock people have to pay.i like your advised to let them use the app free most popular parts and charge for the rest of the app to unlock other features. -editing tool from tattoo you app , clone exactly all *there is a model section I will provide the images -if you are using the editing tool and you are erasing something you uploaded ,the "undo" icon is missing , should be added on top of "eraser icon". - -"multiply effect, transparency, at least 5 effect as photoshop " reference pic blender app ( contrast , eraser, opacity, layers, orientation, crop,pinch image to enlarge etc).