Art Gallery App

Hi, I am looking for a developer with expertise in Javascript, jquery, HTML5 to develop a mobile app on either of these 2 platforms: [login to view URL] [login to view URL] Please advise which platform you think would be most suitable. The App should allow an Artist to upload a Bio about himself, some images of his Art (Portfolio), contact details & a schedule of his upcoming exhibitions. I see this working through a web interface so the Artist would create an account, log in and upload his details. These details are then pushed out into the app. The end user on the app will then be able to see Information on this artists, browse some of his Art examples (this will be a Gallery type widget, much like the native gallery found on phones) and view a list of his exhibitions and their details. Every page can be shared via Facebook, Twitter (user to login into their account through the app) email. Each time the artist modifies his profile or adds a new exhibition a push notification is send to the app. I am looking for a developer who can show examples of previous apps they have built and has a strong portfolio. This is very important otherwise you will not be considered for the project. All graphics will be provided by us for you to code up. Please start your reply with the words "Art App" so that I know you have read the entire brief. I am looking to launch this app for the iPhone first and then maybe android. Please consider this in your quote and provide details of what extra costs there would be to make it Android ready. Thanks Pete