Ultimate Expense Tracker Android App Source Code – Firebase & AdMob Ready

Overview

This expense tracker android app source code provides a complete, professional solution for developers and entrepreneurs who want to launch a feature-rich financial management app quickly. Built in Android Studio using Java with Firebase as the backend, this project includes everything you need to start earning through ads or direct sales.

Unlike basic templates, our codebase is production-ready with clean architecture, proper documentation, and modern Android development practices. Whether you’re a beginner looking to learn or a startup wanting to save development time, this package offers exceptional value.

Features

✅ Smart EMI Calculator

– Principal/interest/tenure inputs
– Real-time EMI updates
– Total interest vs principal visualization
– Quick Calculation Widget

✅ Amortization Tables
– Monthly payment breakdown
– Principal/interest/balance columns
– Scrollable yearly summaries

✅ PDF Export
– Professional loan reports
– Custom branding footer
– Share/Save to device

✅ Calculation History
– Room Database storage
– Date/time tracking
– One-tap delete

✅ Ad Monetization
– Banner ads on main screens
– Interstitials after key actions
– Rewarded ads for PDF unlocks

✅ Premium UI/UX
– Material Design 3 components
– Dark/Light theme toggle
– Onboarding & dashboard flows

Requirements

• Android Studio Arctic Fox or later

• JDK 11 or higher

• Minimum SDK 21 (Android 5.0)

• Firebase project setup

• AdMob account for advertisements

• Google Play Developer Account ($25 one-time fee)

Instructions

1. Download & Import: Extract the ZIP file and open in Android Studio

2. Firebase Setup: Create new Firebase project and add google-services.json

3. AdMob Configuration: Update ad unit IDs in strings.xml

4. Build & Test: Run on emulator or physical device

5. Customize: Modify colors, app name, and package name

6. Publish: Generate signed APK and submit to Play Store

Complete setup documentation with screenshots is included.

Why Buy Directly from DroidDevSolutions.in?

✅ Direct Developer Support – Get help from the actual code developers
✅ Customization Services – Need modifications? We can help!
✅ Faster Response Time – No marketplace ticket delays
✅ Better Pricing – No marketplace commission fees
✅ Relationship Building – Become our long-term client for future projects

Our Quality Promise

• Clean, Commented Code – Easy to understand and modify

• Bug-Free Guarantee – Thoroughly tested on multiple devices

• Modern Architecture – Following Google’s best practices

• Regular Updates – Compatible with latest Android versions

🛍️ What You Get:

When you purchase this expense tracker android app source code, you receive:

• Complete Android Studio Project (Java)

• Firebase Backend Configuration

• AdMob Integration Code

• Full Documentation (Setup guide & customization)

• Screenshot Assets for Play Store listing

• 6 Months Technical Support

• Free Future Updates

• Commercial License (Sell on Play Store)

📥 Instant Download + Support

✅ No Monthly Fees – One-Time Payment
✅ 100% Editable & Customizable Source Code
✅ Full Documentation & Setup Guide Included

DEMO & DOCUMENTATION