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Need a very basic android application, process will be like this: -
1. Application will open with splash screen with some dummy logo and then a Login Screen, you need to create a WCF web service to perform log in functionality and store credentials securely in application, so that user don't need to re-login everytime.
2. Application will access all the contact list of the user and send complete list in our database using WCF web service and will also check if any of the user is already registered with us , show those in another list and those who are not registered with us, show them in some other list so that user can send invitation to join our website / or download App using their on data messaging service like whatsapp / or other such softwares does this.
3. User will be then redirected to our website in one tab ,, and another tab will be always there to invite people who are not registered with our website and another tab to show list of user which are already registered with out website.
That's it for now.