FiatCryptoFlip - Real-Time Currency Conversion

FiatCryptoFlip is a powerful real-time currency converter for macOS that bridges traditional finance and cryptocurrency markets. Convert between 11 fiat currencies and 12 major cryptocurrencies with instant, accurate exchange rates powered by 7 reliable API sources.

Built specifically for macOS using SwiftUI, FiatCryptoFlip delivers a seamless native experience with professional features wrapped in an intuitive interface that anyone can use.

Real-Time Exchange Rates

Stay informed with instant conversions updated every 60 seconds. Instant conversions get you live exchange rates with automatic updates, while multi-source reliability ensures 99.9% uptime with 7 integrated APIs providing automatic failover.

Smart caching with intelligent 5-minute rate caching reduces latency while maintaining accuracy. Visual countdown timer shows you exactly when the next update occurs, and manual refresh gives you on-demand rate updates whenever you need them.

Bidirectional Conversion

Convert seamlessly between any currency pair with any-to-any exchange supporting all 23 currencies in both directions for 506 possible conversion pairs. Quick swap provides one-click button to reverse conversion direction instantly.

Precision formatting displays up to 8 decimal places for cryptocurrencies and 2 for fiat currencies, ensuring accurate values for all transaction types. Real-time input means conversions update as you type with intelligent debouncing for smooth performance.

Professional Interface

Modern design with beautiful dark gradient theme (blue to purple) provides an elegant working environment. Intuitive layout offers clear, organized interface for effortless conversions with optimized window sizing (480-580px × 480-600px) that adapts to your workflow.

Visual feedback includes loading indicators showing network activity, countdown timers for auto-refresh tracking, and user-friendly error messages when issues occur. Rate transparency always shows current exchange rate, data source attribution, and timestamp of when rates were last refreshed.

Comprehensive Currency Support

11 Fiat Currencies

Track and convert all major world currencies: USD (US Dollar $), EUR (Euro €), GBP (British Pound £), JPY (Japanese Yen ¥), RUB (Russian Ruble ₽), CNY (Chinese Yuan ¥), CHF (Swiss Franc Fr), CAD (Canadian Dollar C$), AUD (Australian Dollar A$), INR (Indian Rupee ₹), and ZAR (South African Rand R).

12 Major Cryptocurrencies

Convert popular digital assets: Bitcoin (BTC) - The original cryptocurrency, Ethereum (ETH) - Smart contract platform, Tether (USDT) - Stablecoin pegged to USD, Binance Coin (BNB) - Binance exchange token, XRP (XRP) - Fast transaction protocol, Cardano (ADA) - Proof-of-stake blockchain, Solana (SOL) - High-performance blockchain, Dogecoin (DOGE) - Popular meme coin, Polkadot (DOT) - Multi-chain protocol, USD Coin (USDC) - USD-backed stablecoin, Litecoin (LTC) - Silver to Bitcoin's gold, and Chainlink (LINK) - Decentralized oracle network.

Total: 23 currencies across 506 possible conversion pairs

Maximum Reliability

With 7 integrated APIs, you'll always get accurate rates even if individual services experience downtime. Cryptocurrency APIs include CoinGecko (Primary), CryptoCompare, Binance, and CoinCap for comprehensive coverage.

Fiat currency APIs leverage ExchangeRate-API, CurrencyAPI via jsDelivr, and Fixer.io for global exchange rates. Intelligent fallback automatically switches to backup sources without user intervention if the primary API is unavailable.

Smart Conversion Logic

Crypto-to-crypto converts via USD as intermediate currency for maximum accuracy. Crypto-to-fiat uses direct API calls to cryptocurrency exchanges for real-time pricing. Fiat-to-crypto provides reverse rate calculations from crypto-to-fiat rates. Fiat-to-fiat leverages direct exchange rates from foreign exchange APIs.

Rate accuracy maintains up to 8 decimals for crypto and 2 for fiat with 5-minute cache validity ensuring fresh data. Multiple sources provide cross-validation across 7 APIs, while timestamp tracking includes fetch time for every rate.

Beautiful User Experience

Main window features 480-580px width × 480-600px height dimensions with dark gradient theme (blue to purple) and vertical stack with intuitive flow. Key UI elements include currency selectors with dropdown menus and emoji/icon indicators, large easy-to-read amount input fields, and animated circular swap button with gradient fill.

Rate display shows clear "1 X = Y Z" format for instant understanding. Countdown timer provides visual circular progress indicator for auto-refresh. Status messages include source attribution and update timestamps, while error handling delivers user-friendly messages when issues occur.

Smooth animations include spring animation for swap button rotation, fade transitions for elegant loading states, color transitions with countdown timer changing from green to orange to red, and progress indicator with circular animation for auto-refresh countdown.

Multilingual Support

Full interface localization in English & Russian languages. Easy language switching lets you toggle between languages instantly, with all UI elements, labels, and messages fully translated for native speakers.

Security & Privacy

HTTPS only means all API connections use secure HTTPS with certificate validation. No data collection ensures all conversions happen locally on your device with zero tracking. No user tracking respects your privacy completely. Public APIs uses only reputable, public data sources from established providers.

Local processing keeps all calculations on your Mac—no cloud services, no data transmission. Your conversion history and preferences never leave your device.

Performance & Technical Excellence

Fast conversions deliver results in under 100ms for cached rates with API response times typically 200-500ms. Auto-refresh updates every 60 seconds with 5-minute cache duration for optimal balance. Debounce delay at 300ms for typing input ensures smooth, responsive interface.

Native macOS built with SwiftUI for modern, native macOS experience using Swift 5.0+ and MVVM architecture pattern. Swift concurrency leverages async/await for smooth, responsive performance without blocking the UI.

Perfect For

Traders: Quick price checks across multiple cryptocurrencies, compare crypto values in your local currency, monitor exchange rates throughout the day.

Travelers: Convert between multiple fiat currencies, check crypto values in travel destinations, plan international transactions with current rates.

Investors: Track portfolio values in real-time, convert between investment assets, calculate returns across currencies and crypto assets.

Finance Professionals: Quick reference for client consultations, multi-currency calculations, crypto market monitoring with reliable data.

Cryptocurrency Enthusiasts: Monitor your favorite coins in any currency, quick conversions for purchases, stay updated with auto-refresh.

Why Choose FiatCryptoFlip?

Maximum Reliability—With 7 integrated APIs, you'll always get accurate rates even if individual services experience downtime.

Native macOS Experience—Built specifically for macOS using SwiftUI, ensuring optimal performance and seamless integration with your Mac.

No Subscriptions or In-App Purchases—One-time purchase gives you full access to all features forever.

Privacy-First Design—All conversions happen locally on your device. We don't collect, store, or transmit your usage data.

Professional Yet Simple—Powerful features wrapped in an intuitive interface that anyone can use.

Always Up-to-Date—Auto-refresh ensures you're always working with current market rates.

Comprehensive Coverage—23 currencies covering major fiat and crypto markets worldwide.

Get Started Today

Download FiatCryptoFlip from the Mac App Store and start converting currencies with professional accuracy and complete privacy. Simple to use, powerful when you need it—experience the fastest way to convert between fiat and cryptocurrencies on your Mac.

23 Currencies • 7 APIs • 2 Languages • 100% Privacy

Built with Swift and SwiftUI for macOS—combining simplicity with the power of multi-source data aggregation.