Dear client,
I'm very interested in your project.
As well as 5 years experience with mobile application development, I think you'll find I have the skills you're looking for.
Please take a look at my portfolio to check some best apps I have developed. Typically, I have been developing many varios iphone applications for previous clients.
I have rich experience to develop this kind of ios app what you want to make.
and I also have amazing skill in objective-c and swift.
I believe my skills would be ideal for your project.
Thank you for your consideration.
Regards