# CoinCrab — Professional Crypto Tracker > Professional Crypto Tracker (iPhone/iPad app by Marcel Stampfer.) - Source: https://appshunter.io/ios/app/coincrab/id6752027935 (this page in markdown: same URL + `.md`) - Developer: [Marcel Stampfer](https://appshunter.io/developer/1825604669) - Category: Finance, Education - Price: Free - Age rating: 4+ - Requires: iOS 17.0 · 4 MB - Languages: American English - Released: 2025-09-09 - Data updated: 2026-05-19 - User reviews in markdown: https://appshunter.io/ios/app/coincrab/id6752027935/reviews.md ## What is CoinCrab? CoinCrab - Professional Cryptocurrency Tracker Transform your crypto trading with CoinCrab, the advanced tracking app for serious investors. Monitor real-time market movements and analyze professional-grade charts. Professional Charts Enterprise-grade TradingView charting with interactive volume analysis across multiple timeframes: 1-hour, 24-hour, 7-day, 30-day, and beyond. Features reference lines, fullscreen mode, and smooth 60 FPS rendering with professional dark theme. Real-Time Data Instant price notifications with sub-second latency. Get animated price indicators, market cap rankings, percentage changes, and trading volume analysis with automatic refresh. Premium Experience Sleek interface with official CoinMarketCap logos, color-coded movements, and distraction-free design optimized for all screen sizes. Advanced Features Filter by price and market cap, mini trend charts, personalized watchlists, and historical analysis. Enterprise-grade security with no personal data collection. Perfect for day traders, long-term investors, and crypto enthusiasts. Join thousands using CoinCrab for reliable market analysis. Download now and elevate your crypto trading experience. Discord for support: https://discord.gg/qqpcR5J3 Open source software: https://github.com/mstampfer/coin-crab ## Version history (last 5 releases) ### 1.23 — 2025-10-14 What's New in Version 1.23 DuckDNS Integration for IP Transparency This release introduces dynamic DNS integration, making server connectivity resilient to IP address changes. Key Improvements - Seamless Connectivity: App now uses domain names (coincrab.duckdns.org) instead of hardcoded IP addresses - Zero-Downtime Updates: Server IP changes are handled automatically via DNS resolution—no app updates required - Production Ready: Both production and UAT environments fully configured with DuckDNS domains - Improved Reliability: Network configuration changes no longer require app redeployment Technical Details - MQTT broker connections now use dynamic DNS resolution - Server binds to all network interfaces for flexible deployment - Unified domain-based architecture for both HTTPS API and MQTT communication - Updated deployment workflows to leverage DuckDNS for CI/CD operations This update ensures uninterrupted service even when infrastructure changes occur, providing a more robust and maintainable deployment architecture. ### 1.22 — 2025-09-18 What's New in CoinCrab 1.22 Performance Improvements - Faster App Startup: Crypto prices now load instantly when you open the app - no more waiting several seconds for data to appear - Improved Connection Reliability: Enhanced MQTT connection system ensures first-time connection success with reduced timeouts Bug Fixes & Stability - Fixed Duplicate Price Updates: Resolved issue where multiple BTC prices with different timestamps would appear simultaneously at startup - Cleaner Data Loading: Eliminated accumulated price data from previous sessions that could cause confusion - Enhanced Error Handling: Improved connection verification and timeout management for better user experience User Experience Enhancements - Streamlined Logging: Reduced verbose debug messages for cleaner app performance - Optimized Real-time Updates: More efficient MQTT message handling for smoother price streaming - Better State Management: Improved app startup sequence ensures consistent data loading Technical Improvements - Server-side Optimizations: Enhanced data fetching and caching mechanisms - Connection Architecture: Upgraded MQTT client implementation with synchronous verification - Memory Management: Optimized retained message handling to prevent data accumulation This update focuses on making CoinCrab faster, more reliable, and providing a smoother experience when tracking your cryptocurrency investments. The app now starts up quickly and maintains consistent real-time price updates without the delays or duplicate data issues from previous versions. ### 1.021 — 2025-09-16 Adjust client configuration to reach MQTT server ### 1.02 — 2025-09-15 What's New in CoinCrab v1.02 Enhanced System Architecture - Improved iOS Library Integration: Updated Rust-based iOS library (crates/ios_lib) with enhanced FFI (Foreign Function Interface) capabilities for better Swift-Rust interoperability - Optimized MQTT Communication: Enhanced message handling and connection management for more reliable real-time cryptocurrency price updates - Refined Client Configuration: Streamlined configuration management system for better app performance Performance Improvements - Enhanced Message Processing: Improved MQTT message handler for faster and more efficient real-time data processing - Better Connection Stability: Upgraded connection management to provide more reliable communication with the cryptocurrency data servers - Optimized Resource Management: Enhanced memory and resource usage patterns for smoother app performance Technical Updates - Updated Build System: Improved build configuration and dependency management - Enhanced Error Handling: Better error recovery and logging mechanisms throughout the application - Code Quality Improvements: Various under-the-hood optimizations and code refinements Infrastructure Enhancements - Improved Server Communication: Enhanced protocols for communicating with both local development and production servers - Better Icon Loading System: Refined cryptocurrency logo loading mechanism for faster image rendering This update focuses on stability, performance, and maintaining the solid foundation for real-time cryptocurrency tracking while preparing for future feature enhancements. ### 1.01 — 2025-09-11 What's New in Version 1.01 Enhanced Security & Performance - HTTPS Security: All data connections now use secure HTTPS encryption for maximum privacy and security - Professional SSL: Enterprise-grade SSL certificates ensure your data is always protected - Optimized Network: Improved connection reliability and faster data loading Improved User Experience - Faster Icon Loading: Cryptocurrency logos now load instantly with enhanced caching - Smoother Performance: Optimized network requests for better app responsiveness - Enhanced Stability: Improved error handling and connection management Technical Improvements - Modern Infrastructure: Upgraded to production-ready server architecture - Better Reliability: Enhanced real-time price updates with improved MQTT connectivity - Code Quality: Internal optimizations for better performance and maintainability Bug Fixes - Fixed occasional icon loading delays - Improved app startup time - Enhanced network error handling - Better memory management for smoother operation This update focuses on security, performance, and reliability improvements to provide you with the best possible cryptocurrency tracking experience. ## More apps by Marcel Stampfer - [Madame Silly's Cube Helper](https://appshunter.io/ios/app/madame-sillys-cube-helper/id6748390310) All apps by Marcel Stampfer: https://appshunter.io/developer/1825604669 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-05-19.*