Developing our website and creating a mobile app

We have the domain and server. We would a developer who can develop a website which looks graphically great. Also create an mobile app. Building a website with logins for volunteers of my foundation. Any one can post blood requirements. It will alert all the volunteers living in & around that area by sending out a message. This is 1 one of the projects of this organization as of now. This website should also be ready to host more projects in future. Also an app of same sort would be required. Every login should have a profile and when volunteers register they can use google+ or facebook to obtain login ids for this website or app. There should be head volunteer logins who can enter the date when volunteer donated blood in their profiles. Volunteer logins should show their pics, basic info, when they donated blood, like fb instead of likes there will be hearts earned for every cause he stands. Ex: Anonymous posts a message of blood requirement in vijaynagar area. It would alert all the volunteers staying in and around(2-3km) vijaynagar by an SMS that there is a requirement of blood. Also we have a tag line of "Be a Big Heart, be a hero" hence we are looking the website to be of superhero theme based and the app to be simple. More information regarding the pages of website will be discussed after you accept the project.