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ZeroDay Dev

ZeroDay Dev

Learn to break things

4 ratings
3 reviews
📚 Education
🛠️ Developer Tools
Free
In-App Purchases

Details

  • Released
  • Updated
  • March 10, 2026
  • July 29, 2026

Features

Developer

John Lawniczak
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🧾$4.99
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About

Learn secure coding and blockchain security through hands-on challenges and real-world exploit analysis. Practice building exploit intuition with interactive exercises and track your progress through curated learning paths. The app is designed for offline use, allowing you to learn anytime, anywhere.

✓Hands-on coding challenges
✓Real-world exploit analysis
✓Interactive practice exercises
✓Curated learning tracks
✓Progress tracking and gamification
✓Offline-first functionality
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What's New in ZeroDay Dev

2.2

July 29, 2026

- Learn Monad from the protocol up, including MonadBFT, RaptorCast, sub-second finality, parallel execution, local mempools, transaction ordering, MEV boundaries, and recent network revisions. - Every Deep Dive now begins with concise History & Context so you can understand where a technology came from and why it matters before starting the exercises. - Mobile Security now includes practical GrapheneOS installation and hardening guidance, plus careful setup and recovery warnings for duress credentials. - Newer real-world incidents including AFX Trade, the Verus Ethereum Bridge, B² Network, 42DAO, and an AI model-evaluation intrusion. - Fund-tracing lessons now cover address poisoning, exchange service boundaries, and clearer techniques for following assets across systems. - New SBOM and tarball glossary entries strengthen software supply-chain coverage, with broader security-content and reliability improvements throughout the app.

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$4.99

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User reviews

Most RecentHighest RatedLowest Rated

Game Changer

Impressed with the glossary and exploits widget. Tight UX. Clean implementation, super snappy. Having it on the home screen makes it convenient.
Apple80503Apple80503

Pretty neat!

Enjoyed all the latest exploit data to search through and enjoyed the memory exam section the most. :)
OregonBillsFanOregonBillsFan

Surprisingly thoughtful, stuck with me

dowloaded out of curiosity and didn't expect much, but it actually held my attention longer than most apps like this. the interactions and actually tapping the vulnerable lines/code make you pause and think in a different way. some pretty funny easter eggs too. i've found myself coming back to it without really planning to, which says a lot. simple ideas but they work.
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Chern BChern B

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FAQ

What is ZeroDay Dev's learning methodology?

ZeroDay Dev employs a hands-on approach with over 4,000 interactive challenges and real-world exploit analysis. It focuses on building intuition through practice and offers curated learning tracks for various domains.

How does ZeroDay Dev track user progress?

The app uses a system of Streaks & XP, daily streaks, badges, and progression to keep users engaged and motivated. It also includes performance tracking for timed tests in the Exam section.

Can I use ZeroDay Dev offline?

Yes, ZeroDay Dev is designed to be offline-first. All content is stored on your device, allowing you to learn without an internet connection.

What specific security concepts does ZeroDay Dev cover?

ZeroDay Dev covers a wide range of topics including reentrancy, oracle manipulation, flash loans, proxy races, ZK trusted setup, and more, focusing on Rust, Solidity, DeFi, Solana, and general cybersecurity.

Is ZeroDay Dev suitable for beginners?

Yes, the app is designed to help users learn secure coding and blockchain security from the ground up, with interactive exercises and clear explanations of real-world exploits.

What devices is ZeroDay Dev available on?

ZeroDay Dev is available on iPhone and iPad devices.

How often is ZeroDay Dev updated?

The latest version is 1.9, and the app was last updated on May 14, 2026. This suggests a relatively active development cycle.

Does ZeroDay Dev have ads?

No, ZeroDay Dev does not contain advertisements. It is a free application that focuses on providing an uninterrupted learning experience.