Dear, sir.
Nice to meet you.
I just read the description regarding the project and interested in working on your project.
As an expert, I have developed many apps before and so have the rich experience in this field.
I have plenty experience social networking mobile app development. I have already built social dating, chatting, photo & video editing and sharing app like tinder, snap chat and so on.
Please feel free to contact with me at any time.
Your idea + my skill = GOOD RESULT, SUCCESS.
I will be provide best service for our business.