Customer Loan Management App

I want a straightforward mobile app that lets my borrowers stay on top of their loans after the funds have been disbursed. The app’s sole focus is management & repayment; I am not tackling the application or approval stages here... (Budget: ₹600 - ₹1500 INR, Jobs: Android, Flutter, iOS, iPhone, Mobile App Development, Payment Gateway Integration, PhoneGap, React Native)