Notification app for iPhone, BlackBerry, Android using PushIO

I need a very simple app which leverages on PushIO's push functionality: The app user will sign in with their mobile phone number. My back-end server will process the mobile phone number. From time to time - triggered by a non-related event, the server will send a message to the app using the mobile phone number the user registered with. The user must be able to copy the message to the device's clipboard in order to paste the message into a regular text message (in order to forward the information to a 3rd person via SMS, WhatsApp or whatever messaging app the user chooses). It would be great if the message can automatically be forwarded via SMS but this functionality is not required. The app's UI will simply show a history of messages received. Options would include signing out and signing in with the mobile phone number (and password). On sign in failure, the app should display the reason for failure (sent in response from the server). Server communication data use json format. I require an iPhone, BlackBerry and Android version of the app. Windows mobile optional.