Gold Savings Android App MVP

We are SHAKTI JEWELLERS, a jewellery business in India.
We need a simple Android app for managing our 11-month Gold Savings Schemes.
Main Schemes
1. AASHAYA Gold Savings Scheme
Monthly payment starting from ₹5,000
Each month's payment is converted into gold weight based on that month's gold rate
Gold weight is accumulated for 11 months
2. One-Time Gold Savings Scheme
Customer makes one lump-sum investment
Investment-day gold rate is used to calculate and lock the gold weight
Locked weight is used after 11 months
Required MVP Features
Admin login
Customer registration
Customer profile
Scheme selection
Monthly payment entry
Gold rate entry
Automatic gold-weight calculation
Total accumulated gold weight
Payment history
Maturity date
Jewellery purchase/excess-weight calculation
Telugu + English
Firebase/database
Simple professional UI
Important
This is Version 1 / MVP. We want the basic working application first. More features will be added later.
Budget: ₹5,000
Developer must provide:
Complete source code
Database/backend access
APK
Basic documentation
Ownership of the developed app
Please don't send a generic proposal. Tell us:
What you can deliver within ₹5,000
Delivery time
Android technology you will use
Firebase/backend included or not
Examples of similar apps you have developed
Whether source code will be fully provided