Dear Sir. I checked your descriptions.
I have rich experiences like your project.
I am very happy to have a chance to have contact with you, and this would be a great turning point for success in your business. The time and quality are what I mostly care about in my development. "The customers are my 'Lords' and what they request is what I have to do ", this is my development service motto.
As well as my motto, I have rich experience in Java, C++, C#, Objective-C, Swift, phoneGap, Xamarin as I have worked for domestic/global customers for more than 5 years. Your project is within my ability and experience, and I can satisfy you with high quality result as soon as possible, within your budget.
I would like to express my thank to you and to Freelancer which gave me this chance of contact with you.
Best regard !