We've an iOS app that lets you create arts similar to ASCII art but with fonts and letters (http://fontify.it) and looking for a service (like zazzle or redbubble) that has an iOS library that enables that service inapp.
From a user experience perspective:
It would be so much better to buy posters/mugs from the app where it was created than exporting it/putting it on some desktop then go to that website, or first search for it then register, oh no where did I put that file again, ah nevermind.
From a business perspective:
Apple doesn't seem to ban apps that sell goods inapp: eBay.
(Maybe both, but ) one of the sites mentioned above sells only on their website even though they let sellers create their own website. I guess this is to upsell by cross promotion ("continue shopping" message + similar products after the purchase).
Do you know any quality service that already offers this?
or, if any of you reading can do printing/delivery but needs devs we are more than happy to implement it :)
(should you dislike fontify, think about printing photos =])
I think we're (http://www.pwinty.com) exactly what you're looking for. We're an API for printing photos and posters.
You call our API, we do the printing and shipping. All the billing, invoicing and checkout- you deal with.
Not doing mugs yet, but will do soon.
Get in touch via the website and I can send you a copy of the iOS library (its a bit rough round the edges, but should give you a good headstart).