App Development with Web Admin Panel

I am looking for an experienced app developer to help me create an app for both iOS and Android. The app should feature user registration and login, push notifications, and in-app messaging. Key requirements: - User registration and login system - Push notifications - In-app messaging feature Ideal freelancer should have: - Experience in developing apps for both iOS and Android - Proficiency in creating user registration and login systems - Prior experience with integrating push notifications - Deep understanding of in-app messaging functionality In addition to app development, I also need a web-based admin panel for this project. The admin panel should be user-friendly and allow me to manage the app efficiently.