Hi there!
As per your description, I can understand your requirements. You want iPhone/iPad application like WhatsApp but we develop your application very uniquely and we have Experience of more than 7+ years in WordPress, PHP, Android apps, iOS apps, Graphic Design, and development.
I will provide wonderful project and qualitative code, also after complete, I will provide full service and do my best for you. Let's built a Business relationship together.
Thanks
Jalpa
Team SevenStar.