An iPhone learning app for web3 and smart contract security
If you are searching for the best iPhone learning app for web3, you probably do not want a generic learn-to-code course. You want something built for smart contract engineers, security learners, and developers who want repeatable drills they can finish in a few minutes on a phone.
ZeroDay Dev focuses on web3 security, Solidity, Rust, DeFi, Solana, and real exploit practice. It is free to start, works offline-first, and is designed for short sessions instead of long lectures.
Why this is different from generic coding apps
Security-first practice
Instead of broad beginner coding lessons, ZeroDay Dev drills exploit patterns, failure modes, protocol mechanics, and secure coding decisions.
Built for phone-sized sessions
Questions use taps, drags, matching, and short reasoning loops so you can study in 5-minute chunks during commutes or downtime.
Real-world incidents
The app includes 167+ real-world exploit references so the practice is tied to incidents developers and auditors actually talk about.
No subscription pressure
It is free to start. A one-time $4.99 unlock opens the full app, which is different from many coding apps that depend on recurring subscriptions.
Who it is for
- Smart contract developers who want quick exploit and protocol drills.
- Security researchers and auditors who want mobile review and recall practice.
- Rust, Solidity, Solana, and DeFi learners who want more than flashcards.
- Beginners who prefer short structured practice instead of long video playlists.
What you can learn
- Solidity patterns, upgrade risks, vault accounting, and exploit classes.
- Rust ownership, borrowing, async patterns, and systems concepts.
- DeFi mechanics including AMMs, lending, oracle design, and liquidation risk.
- Solana account model, CPI risks, signer validation, and real Solana incidents.
- ZK, trading, Bitcoin, and glossary-style recall for security vocabulary.
How the app teaches
ZeroDay Dev combines practice questions, exercises, exams, Deep Dives, glossary drills, Ops scenarios, and War Rooms. The format is meant to build recognition and decision-making, not just passive familiarity.
That makes it a better fit for developers looking for a web3 mobile learning app than a traditional video-heavy course catalog.
Related pages
For the full feature breakdown, open the ZeroDay Dev docs. For a searchable incident catalog, browse Exploit-Data. For install, contact, and progress questions, use support. To see the core positioning page, return to the homepage.