Hi, I'll do the job for you. I have plenty of experience in developing android apps. I have made an android app named Millennia before. It created it using Google Firebase (Real-time database) and Android (Java + XML). However, I have an experience in developing cross-platform (iOS + Android) apps using Flutter framework. So if you want me to make this app for you, feel free to contact me. I'm new to this freelancing website but I have what it takes to make your app with dedication and perfection, indeed. I'll be honoured and I hope you'll be satisfied with my care.