=====No self praised=====
Greetings,
After carefully reading your job description, I am very sure with your project and I will complete this task to create android application with following flow, as you mentioned.
✅ Link backend of your android app to firebase firestore database instead of php (mySQL)
Sir,
I viewed my calendar, I can start work immediately and try to complete within 4-7 days. Let us contact for 10 min to discuss the project details.
Regards,
Muhammad Nouman Ali