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I need an iPhone app to help manage a team for an event. The app will need to allow the user to set up a contact list so a single SMS message can be written in the app and sent to the contacts in the list. The SMS would be an invitation to attend the event.
The app also needs the ability for the user to mark each contact in the list with a simple flag (tick or a cross) so visually the list tells the user who is and isn't attending.
For a nice user interface the app also needs to display the confirmed attending contacts by name on a pre-designed graphic.