App developer

I am looking for an app developer who can develop an app for both iOS and Android platforms. The main purpose of the app is to provide health and fitness related functionality. I have specific design and feature requirements in mind that I would like to be implemented. I am seeking a developer with experience in developing health and fitness apps for both iOS and Android platforms. The ideal candidate should have expertise in app development, UI/UX design, and should be able to incorporate the specific requirements I have in mind.