here is the details for facebook applications
1. Application that tells you who visited your profile page.
2. Application to find people on facebook with similar interests and age group. Each User is allowed to do 3 separate searches for free and after the third attempt they need to pay very small amount using paypal or credit card.
3. Application with collection of greeting sentences in different languages and animations for greetings so users can send with friendship invitations on facebook, so they get to choose the sentence or the animation they want to send (please note this application could be a part of the second application)
Please let me know if you have any questions and whether your developer can do these applications and the cost involved and how long it will take to finish them.
Assurance of excellent job done with expert team having 5 years of experience in this field within allotted time with consideration of minute details.