Dear Sir.
I'm talented mobile app/game developer.
I have been developing Iphone/android apps for several years. You can see high skilled apps in my portfolios.
I'm very interested in your job post involving these skills.
I have consistently delivered projects on time and under budget,
which has earned us many positive ratings, as you'll see in work history.
I believe that my skills would be ideal for your project.
Regards.
There are pieces of my past work history.
They has accomplished high score at iTunes.
I hope that below apps will serve your purpose.