Hi, i'm a software Engineer, a graduate in computer science and a professional iOS developer, i have created 3 complete iOS applications for my job from which are published as an Enterprise products and are currently in business.
I have worked on so many technologies related to iOS including geolocation services and also worked on connecting iPhone application with facebook/twitter/Whatsapp so the part where you want to connect with strangers can be done through social media connectivity as well, it's just a suggestion, i'm open to work with any of your idea.
Feel free to contact me for further discussion or if you want to see any of my work i can show you.
Looking forward to hear from you guys.
Cheers.