Dear Hiring Manager.
I have read requirements of your project with great care and I am very interested.
I think that I am the right person for the job.
I have good skills in iPhone & iPad/Android with 5+ years experiences, mainly working in iOS and Android app, mobile web development.
I am always ready for you and your job.
I am looking forward to discussing with you about this job post.
communication is not a problem, available on Skype.
If you give me a chance, I shall do my best for your job success.
Best Regards.