ZELHACK — COMPLETE CYBERSECURITY ENGINEER TRAINING
The official app from Rocheston.
GET CERTIFIED. GET HIRED.
Train for one of technology’s most coveted titles: Cybersecurity Engineer.
Cybersecurity engineering is one of the world’s fastest-growing professional fields. With the average industry salary reaching USD 150,000 per year, there has never been a better time to master offensive and defensive security.
Go beyond flashcards and quiz apps. ZelHack delivers visual cybersecurity training through 1,118 downloadable slide-based courses, expert lectures by Haja Mo, 3,700 animated ZelCards, 221+ hands-on labs, premium audio, interactive quizzes and 35 modules.
THE OFFICIAL RCCE TRAINING PATHWAY
The Rocheston Certified Cybersecurity Engineer (RCCE) is a globally recognized certification sought by employers, enterprises and government organizations.
RCCE is ANAB-accredited under ISO/IEC 17024 and recognized by the U.S. Department of Defense under DoD 8140 for 16 cybersecurity work roles.
ZelHack delivers the complete RCCE training curriculum on your phone. Learn how attackers breach systems, how defenders stop them and how cybersecurity engineers protect modern organizations.
START WITH ETHICAL HACKING
Your $1.99 download includes the complete Ethical Hacking module. Learn how systems are compromised, how attacks progress and how defenders respond.
UNLOCK THE COMPLETE RCCE ECOSYSTEM
Upgrade to the Enterprise subscription for just $4.99 per year and unlock:
• 1,118 Downloadable Cybersecurity Courses: Visual, slide-based lessons across 35 modules, from networking fundamentals to threat hunting.
• 3,700 Animated ZelCards: Beautiful, bite-sized and gamified lessons covering 35 deep-dive modules.
• 221+ Hands-On Labs: Practical scenarios that build genuine technical skill. Study the concepts on your iPhone, then perform the accompanying attacks and defenses on your desktop computer.
• Complete RCCE Course Content: Premium audio walkthroughs, interactive quizzes, practical examples and comprehensive lessons for learning anywhere.
This is not a sampler, question bank or companion app. It is the complete RCCE learning curriculum—every course, module, lesson and quiz—delivered on your phone, with hands-on labs performed on your computer.
YOUR PATH TO RCCE CERTIFICATION
Step 1: Complete the curriculum and all 3,700 ZelCards in the Enterprise tier.
Step 2: Unlock the RCCE Eligibility Certificate through a one-time in-app purchase of $299. It confirms verified curriculum completion and qualifies you to sit for the official examination.
Step 3: Attempt the RCCE Level 1 examination at Rocheston. Pass and earn the full RCCE credential—recognized across corporate, government and defense sectors.
The ZelCards and courses are your complete exam preparation. Master them all and walk into the RCCE Level 1 examination ready.
WHAT YOU WILL MASTER
• Systems and Network Security: Linux and Windows hardening, network sniffing, traffic analysis, firewalls and intrusion detection.
• Offensive Security: Information gathering, penetration testing, web application vulnerabilities and database exploitation.
• Defensive Operations: SOC management, Cyber Threat Intelligence, incident response and digital forensics.
• Modern Threats and Engineering: Ransomware defense, Zero Trust, DevSecOps, cloud security and business continuity/disaster recovery.
• Next-Generation Technology: AI in cybersecurity, blockchain security and quantum computing.
PRIVATE BY DESIGN
No login. No account. No tracking. Zero data collection. ZelHack runs entirely on your device, so your identity, activity and learning progress remain yours.
Transform cybersecurity training into a daily habit. Download ZelHack, begin your ethical-hacking journey and complete a full cybersecurity engineering education from your phone.
Cybersecurity Engineer is a registered trademark of Rocheston.
Terms of Use:
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
ZelHack feels much more complete than a normal flashcard or quiz app. The visual ZelCards, labs, and slide-based lessons make it easy to review cybersecurity topics whenever I have time. I like that it covers practical areas like ethical hacking, penetration testing, SOC, malware, and network security instead of only basic definitions. The app is colorful and dense, but in a good way because it feels like there is a lot to explore. For the price, the amount of content is impressive. I’d like to see even more audio lessons added over time, but the current course library already feels valuable.Another thing. The zelcards are so beautiful. I can lick them OMG!
No-nonsense Learning
DurianJJ
With ZelHack, you can quickly learn the fundamentals of cyber security through easy to digest, visually stunning cards and animations. Then test your knowledge with the quizzes at the end. And at such a low cost, it’s the best value out there!
Learn bigger. Teach smarter. ZelHack 4.5 is here!
• A new iPad experience: Desktop-inspired design, full-screen welcome, glowing cards, clearer text and larger controls.
• Two ways to learn: Flip ZelCards and listen to lessons, or teach in Presentation Mode with a single card or front and back side by side.
• Your place, saved: Resume your presentation's category, lesson and layout. Choose a starting lesson, change categories and return Home from Settings.
• Keyboard control: Arrows navigate and flip, Space controls audio, and Escape goes back. Return/Enter advances presentations, including compatible remotes.
• A clearer category library: See all 34 Enterprise modules, even when locked. Download unlocked categories for offline learning. Ethical Hacking is always included.
• Core Slide Deck on iPhone: Enterprise users get 28 bundled PDF decks for offline study. Open matching category slides in portrait or landscape.
• 43 vivid posters: An expanded iPhone gallery and refreshed radio lecture artwork with the right proportions.
• More polish: Corrected iPhone splash branding, improved alignment and smoother navigation.
Version 4.5
The developer, Haja Mohideen, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
