Live Currency Converter – Flutter Currency Converter App (FreeCurrencyAPI + AdMob) (Flutter 3.35.7 | Android & iOS)

Live Currency Converter is a premium Flutter application designed to fetch real-time forex / exchange rates globally. It supports 170+ currencies, includes Google AdMob integration, and features a production-ready UI with high-performance caching. Runs perfectly on Flutter 3.35.7.

Quick Info (Buyer Friendly)

• Flutter Version: 3.35.7 (recommended/compatible)
• Platforms: Android + iOS (Full Source Code Included)
• API Integration: FreeCurrencyAPI (Real-time rates)
• Monetization: AdMob integrated (Native + Interstitial + App Open)
• State Management: Provider (Clean & Scalable)
• Offline Support: Local caching via SharedPreferences
• Rebranding: Easy to change package name, icons, and colors

Table of Contents

• Key Features
• Detailed Feature List
• Included Screens
• Tech Stack
• Installation Guide
• AdMob Setup
• Troubleshooting
• FAQ
• Support / Contact

Key Features (Highlights)

• Real-Time Data: Powered by FreeCurrencyAPI for pinpoint accuracy.
• 170+ Currencies: Complete list with flags, codes, and names.
• AdMob Ready: High-revenue ad formats (Native, Interstitial, App Open).
• Custom Keypad: Smooth, flicker-free UX with a built-in numeric keypad.
• Smart Caching: Works offline using the latest fetched rates.
• Currency Trends: Prepared charts via FL Chart integration.
• History & Favourites: Track past conversions and quick-access pairs.
• Dark Navy UI: Elegant modern design with professional gradients.

Detailed Feature List

A) Live Converter Module

• Two-Way Conversion: Instant conversion from From-To and To-From.
• Instant Updates: UI updates in real-time as you type.
• Flag Integration: Visual aids for every supported currency.
• Validation: Smart checks for API availability and connection.

AdMob Monetization

• Native Ads: Naturally placed on the converter screen for high CTR.
• Interstitial Ads: Perfectly timed transitions (Transitions to History/Trends).
• App Open Ads: Monetize every time the app is brought to foreground.
• Centralized Logic: Manage all Ad IDs from a single file.

C) Data Management

• FreeCurrencyAPI: Industry-standard exchange rate provider.
• .env Security: Keep your API keys protected and outside the source code.
• Fallback Logic: Uses assets/data/currency_info.json if the API is unreachable.
• Local Storage: History and Favourites persist even after app close.

Included Screens

• Animated Splash Screen: Fast loading with branded progress.
• Marketing Welcome Screen: High-conversion onboarding.
• Main Converter Screen: The functional core with native ads.
• Conversion History: Detailed log of previous exchanges.
• Favourite Currencies: Manage most-used currency pairs.
• Detailed Trends Screen: Visualizing FX performance.
• Searchable Currency List: Filter 170+ options by name or code.

Tech Stack / Packages

• Flutter: v3.35.7 (Stable)
• Networking: http
• State: provider
• Environment: flutter_dotenv
• Ads: google_mobile_ads
• Charts: fl_chart
• Icons/UI: country_flags, flutter_spinkit, flutter_svg
• Utilities: shared_preferences, package_info_plus, url_launcher

Installation Guide (Step-by-Step)

A) Requirements

1. Install Flutter SDK 3.35.7
2. Android Studio / VS Code
3. Xcode (for iOS development)

Project Setup

1. Extract the source code zip.
2. Open the project and run:

1. Configure API Key:
• Rename .env.example to .env
• Add your key: FREECURRENCY_API_KEY=YOUR_KEY_HERE

C) Build & Run

Android:

iOS:

AdMob Setup

1. Create apps and ad units in your AdMob Dashboard.
2. Update Unit IDs in: lib/ads_services/admanagers/ad_unit_id_manager.dart
3. Update APPLICATION_ID in android/app/src/main/AndroidManifest.xml

Troubleshooting

API Key Issue: Ensure your .env file is in the root directory and contains a valid key.

Dependencies Issue: Run the following commands:

FAQ

Q: Does this include the backend?
A: No backend required. It uses FreeCurrencyAPI for real-time data.

Q: Is it ready for Play Store/App Store?
A: Yes, just change the branding and AdMob IDs.

Q: Does it support offline conversion?
A: Yes, it fetches latest rates and caches them for offline use.

Support / Contact

For any questions or custom development requests:
codepulsestudio67@gmail.com

Version 1.0.0 — Professional Fintech Release