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Learn or sharpen your security skills with a mobile CTF, quiz generator, and fundamentals section. iCTF values your privacy. ZERO data is collected from the app; all analytics and user achievement tracking is performed locally and encrypted. All of your data stays with you, on your phone. INTERACTIVE SECURITY CHALLENGES Build practical cybersecurity knowledge through engaging Capture The Flag (CTF) challenges. Explore cryptography, web application security, digital forensics, code analysis, network protocols, and more. Each challenge teaches real skills used by security professionals to protect systems and data. BUILT-IN TERMINAL EMULATOR Practice command-line skills with a fully functional terminal featuring 40+ Unix commands. Navigate the virtual filesystem, analyze files, decode data, and solve puzzles in a safe learning environment. Includes cat, grep, find, base64, xxd, md5sum, sha256sum, and many more. CYBERQUIZZER - CAREER PREP Prepare for cybersecurity career interviews with comprehensive study modules: • Security Operations: Active Directory, authentication protocols, system administration • Security Engineering: Architecture design, threat modeling, secure development • Hardware Security: Embedded systems, firmware analysis, IoT security concepts • Defense & Response: Incident handling, log analysis, digital forensics Each question includes detailed explanations with examples and industry best practices. PROGRESSIVE LEARNING PATH • Difficulty levels from Beginner to Expert • Hint system to guide your learning • Solution explanations after practice attempts • Progress tracking across all modules • Earn points and celebrate achievements SAFE LEARNING ENVIRONMENT All challenges run in a completely sandboxed environment on your device. Learn security concepts safely — everything stays within the app with no external connections required. FEATURES - 10+ educational challenges across 8 security domains - 100+ career interview preparation questions - Interactive terminal with virtual filesystem - Code analysis sandbox for learning - Works offline — no internet required - Dark theme for comfortable extended study - Progress saved locally on your device PERFECT FOR • IT professionals expanding their security knowledge • Students studying for cybersecurity certifications • Career changers preparing for security roles • Technology enthusiasts exploring information security • Anyone building defensive security skills Begin your cybersecurity education today. Download iOScTF and start learning!