ReadySec vs ZeroDay Dev

Pass your certification exam — on the first try. Free practice questions and flashcards for every certification — no subscription required. When you're ready for the full question bank, start a 3-day free trial. Study with thousands of expert-written questions across 52 industry certifications from CompTIA, ISC2, AWS, Cisco, ISACA, EC-Council, Juniper, Microsoft, and Google Cloud. Track your readiness across every exam domain so you know exactly where you stand before test day. THREE WAYS TO STUDY - Practice Exams — Timed, randomized tests pulled fresh from the question bank. Never the same exam twice. - Flashcards — Mapped to real exam objectives. Tap to flip, swipe to rate your confidence. - Targeted Training — Zero in on your weakest domains. Study exactly what you need, nothing you don't. KNOW WHERE YOU STAND - Per-domain readiness scores show exactly where you're strong and where you need work - Track progress across every certification you're studying for - Study streaks and history keep you accountable BUILT FOR THE REAL EXAM - Every question aligned to official exam objectives and domain weights - Detailed explanations for every answer — learn why, not just what - Reviewed by subject-matter experts for accuracy and clarity FLEXIBLE PRICING - All study modes, readiness tracking, and analytics are available to every user — nothing is feature-gated - Free sample questions and flashcards for every certification — always available - Only need one cert? Buy it individually for a one-time price — lifetime access, no subscription - Want it all? Start a 3-day free trial of ReadySec Premium and unlock the complete question bank for every certification 52 CERTIFICATIONS COVERED CompTIA - A+ Core 1 - A+ Core 2 - CySA+ - Network+ - Security+ - SecurityX AWS - Advanced Networking – Specialty - Cloud Practitioner - CloudOps Engineer – Associate - Data Engineer – Associate - Developer – Associate - DevOps Engineer – Professional - Machine Learning Engineer – Associate - Security – Specialty - Solutions Architect – Associate - Solutions Architect – Professional ISC2 - CC - CCSP - CGRC - CISSP - SSCP Cisco - CCNA - CCNP Enterprise - CCNP Security - CyberOps Associate - DevNet Associate Microsoft - AZ-104 - AZ-305 - AZ-500 - AZ-900 - PL-300 Google Cloud - Associate Cloud Engineer (ACE) - Professional Cloud Architect (PCA) - Professional Cloud Developer (PCD) - Professional Cloud DevOps Engineer (PCDE) - Professional Cloud Network Engineer (PCNE) - Professional Cloud Security Engineer (PCSE) - Professional Data Engineer (PDE) ISACA - CCOA - CDPSE - CGEIT - CISA - CISM - CRISC EC-Council - CCISO - CEH - CHFI - CND - CPENT Juniper - JNCIA-Junos - JNCIS-ENT - JNCIS-SEC

Learn to break things—before attackers do. ZeroDay Dev teaches secure coding and blockchain security through 4,000+ hands-on challenges. Learn from 120+ real-world exploits: Beanstalk, Indexed Finance, bZx, VeilCash, Sigma.Money, Bybit, and more. Each exploit is linked to verified incident records so you learn from actual on-chain events, not hypotheticals. Practice — Build exploit intuition without reading docs. Tap vulnerable lines, drag tokens into code, get instant feedback. Filter by domain (Exploits, Solidity, Rust, DeFi, Solana) or difficulty. Exercises — Full code challenges with reference solutions. Deeper dives when you're ready. Exam — Prepare for real security assessments. Timed tests across domains with performance tracking. Memory-match decks for opcodes, EIPs, and security terms. Deep Dive Hub — Curated learning tracks for Web2, Web3, Rust, ZK Proofs, and Trading. Recommended tracks driven by your weak areas. Build your own from bookmarks or missed questions. Streaks & XP — Stay consistent and level up. Daily streaks, badges, and progression keep you coming back. Offline-first — Learn on the subway, no Wi‑Fi needed. All content lives on your device. No account required—start immediately. Covers reentrancy, oracle manipulation, flash loans, proxy races, ZK trusted setup, and more. Rust, Solidity, DeFi, Solana & cybersecurity.