News application for blackberry

I have a wordpress website which have REAL ESTATE news ([[login to view URL]][1]) . I want a blackberry and iphone mobile application to allow people to see my news in their mobile devices. The idea is: 1. When user comes to my website through a blackberry or iphone, website must detect it and propose ( YES or NO )? to download the correct app depending on the device. 2. App must have its own icon with our logo and our website name. 3. When user executes it, there will be a nice screen that has some buttons to select the? categories of information to read ( one for each category of wordpress ). 4. Once, the user select one, the mobile will show a list of latest posts title and if he select one of them, user is allowed to see complete information. 5. Suggest which other functionallity we could implement to have a nice app. 6. We have a suscription list from where we send some advertising about our products and services. Can we take that info to be displayed in the mobile app in some way? Or could we ask for installation the name, company and email of the user who want to install the mobile app in order to add them to the newsletter too? 7.? I want to have a? setting where I am able to change for free download of my app, or pay for download. So, if I select "pay",? configure an amount, and when user tries to download , he will be asked for download for $ xx, if he says YES, ask for credit card data, pay and download app in automatic process... is it possible? It could be useful in future. Thanks