Dear, Sir
I have best solution for your job.
I have read your requirement very carefully and I fully understand what you want.
And I am very interesting for your job.
I am ready for your job so I can start immediately.
I am a iOS & Android application developer with +4 years experience.
Probably you will doubt my skills as this account has not any job histories and skill tests.
But I have developed lots of apps for iOS & Android platform.
If you kindly check my portfolio, then it will be thanks.
If you check them, you will know I can do your project well.
I am very suitable for you and I can help you with my skills.
Of course your project is very easy for me and no problem.
I ensure you that I will execute your order to you full satisfaction.
If you choose me, we will provide the best service for you.
I want to work for this project and wish the best cooperation.
I hope this project would be the first step in long term partnership with you.
Please let me know more detail spec about your job.
Looking forward to your favorable reply.
Kind regards.