Dear Sir/Madam,
I have read your requirement and I am very keen to know more about requirement and go ahead with same.
Let me introduce myself, I am John, having 8+ years experience in mobile development (Android & iOS) and I can provide you perfect solution on or before time for all your requirement.
You can see my previous reviews which will help you to finalise me to award this project.
If you are available on chat/skype/slack or other medium, I am open to discuss.
Looking forward for quick response.