CurrencyX – Offline-Ready Currency Converter PWA with 172+ Currencies

CurrencyX is a modern, installable currency converter Progressive Web App designed for reliability, speed, and privacy. Built using HTML, Tailwind CSS, and JavaScript, with a secure PHP API proxy, it supports real-time conversion across 172+ global currencies, including major fiat currencies and selected cryptocurrencies. Unlike typical converters, CurrencyX continues to work even without an internet connection, making it ideal for travel, financial dashboards, and low-connectivity environments. Key Highlights

• Real-time exchange rates powered by OpenExchangeRates
• Works fully offline after first load using PWA and Service Worker
• Converts between 172+ world currencies
• Installable on desktop and mobile like a native app
• Secure PHP backend to protect API credentials
• Fast local caching for instant conversions
• Responsive and modern UI suitable for production use

Core Features Real-Time & Accurate Conversion Uses institutional-grade exchange rate data with automatic updates and background refresh. Full Offline Mode Previously fetched rates are cached locally, allowing conversions without an active internet connection. Progressive Web App (PWA)

• Installable on Android, iOS, Windows, and macOS
• Home-screen icon and app-like experience
• Works in low or no connectivity scenarios

Smart Rate Persistence Exchange rates are stored in localStorage to ensure instant fallback and a smooth user experience. 172+ Supported Currencies Includes major global currencies, emerging markets, and cryptocurrencies such as BTC. Local Flag Assets Over 250 SVG flag icons are stored locally for faster load times and full offline compatibility. Intelligent Currency Sorting Frequently used currencies such as USD, EUR, GBP, JPY, and INR are pinned to the top. Secure API Proxy All API requests are routed through PHP, keeping sensitive API keys fully protected. Use Cases

• Financial dashboards and internal tools
• Travel and expense management applications
• eCommerce price comparison and research
• Freelancer and international payment estimation
• Educational and demo financial projects

What’s Included

• index.html – Main application layout
• script.js – Currency logic, caching, and PWA handling
• sw.js – Service Worker for offline functionality
• manifest.json – PWA installation configuration
• flag-icons/ – Local SVG currency flags
• get_rates.php – Secure API proxy with server-side caching
• custom-premium.css – UI styling and theme tokens

Installation & Setup

1. Create an account at OpenExchangeRates.org
2. Copy your API key
3. Paste the key into get_rates.php
4. Upload all files to any PHP-enabled server
5. Open the app in a modern browser
6. Install the app using “Add to Home Screen”

No build process or CLI tools are required. Performance & Privacy

• No third-party trackers
• No user data collection
• All calculations run locally in the browser
• API calls minimized using intelligent caching
• Optimized for speed, mobile, and low-bandwidth networks

Notes for Buyers

• Offline mode requires one successful online session
• Exchange rates auto-refresh in the background
• PHP is required only for API security, not for UI rendering

Credits

• Exchange Rate Data: OpenExchangeRates
• Styling Framework: Tailwind CSS
• Icons: Lucide Icons
• Fonts: Inter
• PWA Standards: Google Web PWA Guidelines

 

(Only For Premium Category Products !)

1. All digital products are the most recent version, with no possibility of free updates. After payment, you can request an update to the most recent version for 5 days if a new version is released. We free support within 5 days.

2. If a license is required (Excludes WHMCS license , we provide only method not license), please contact us via email or ticket for assistance with activation. Our license is only valid for activation and does not include support.

3. We provide Mobile, PHP script installation services for $19.90 / ₹1700. Please create a backup after installation as we do not support re-installation. For mobile app source code, we do not offer installation services.

4. If you have any questions, please contact us by email [email protected] or create a ticket on this page

5. Please note that any digital products presented on the website do not contain malicious code, viruses or advertising. You will receive the original files from the developers. We do not sell any products that have been downloaded from other websites.

6. The response time can last up to 6 hours.

(Only For Membership Category Products !)

Benefits of our Membership Plans

• Instant access to all plugins and all themes including all future releases
• Unlimited domain usage
• Regular Updates as of when available. Usually, updates are released daily.
• Before purchasing, please read the Terms and Conditions & Refund Policy.
• If you have any questions, please first read the FAQs.
• If you haven’t found the answer to your question, please contact us, and we will respond ASAP.
• Please note that any digital products on the website do not contain malicious code, viruses, or advertising. We buy the original files from the developers. We do not sell any products downloaded from other sites.
• Buy or download for FREE by subscribing to our VIP Membership Plan. Join the club of more than 1100+ happy members. This is the same theme as sold by the developer.

Updates:

• We offer frequent updates for one year from the date of purchase. After this period, you have to purchase the item again to receive further updates, we also offer lifetime updates as a second option.
• We regularly update products as soon as we are notified about an update, we go and download it from the author and update it on our site, but In case the current version of the product is not the latest, You can request an update for the product by contact form.
• We send regular emails advising when products have been updated so please be sure to provide an active email address when you sign up.

Support:

• Our support team is available 24/7, if you have any questions or need help in installing or configuring digital products purchased on the website, please don’t hesitate to contact form.
• Please note that we are not developers of the provided products, so our technical support capabilities are limited. We do not change product functionality and do not fix developer bugs.

For more information please read FAQs & About Us.

(Only For WHMCS Category Products !)

• We Only provide WHMCS Module, how you can  nulled any module step only !
• Instant access to all plugins and all themes 
• Unlimited domain usage
• Regular Updates as of when available. Usually, updates are released daily.
• Before purchasing, please read the Terms and Conditions & Refund Policy.
• If you have any questions, please first read the FAQs.
• If you haven’t found the answer to your question, please contact us, and we will respond ASAP.
• Please note that any digital products on the website do not contain malicious code, viruses, or advertising. We buy the original files from the developers. We do not sell any products downloaded from other sites.