mobile application development

Hello, I am looking to hire a freelancer to develop a mobile application that will be available on both iOS and Android platforms. I have a rough idea of what I’m looking for, but I need assistance in refining the design. Specifically, I want the application to include advanced features such as GPS and payment integration, creating account, Registration, Recurrent Payments, Classroom Chat Groups/Attachments, Notifications for Payments/Class Chats, Card on File, About Us, Registration Capability, Student Profile. Backend: Information concerning Students The app must be easy to use, secure, and reliable. If you believe you can bring my vision to life, please apply for the job. Thank you for your time.