Comparison

Cybersecurity City vs ZeroDay Dev

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Cybersecurity City

Features
Read full description

Cyber games serve as an effective awareness tool by delivering educational content to target groups within an interactive and engaging framework, thereby enhancing the anticipated benefits and achieving desired outcomes in strengthening awareness of cybersecurity concepts and digital safety. In the context of the "National Initiative for Digital Safety", the National Cyber Security Agency launches innovative cyber games aimed at delivering modern cyber awareness content to target segments through gameplay. Each game is designed to be tailored to the age and occupational characteristics of the target segment, thus maximising the initiative's expected impact and contributing to the development of a cybersecure and technologically empowered society. Application Concept • The game application is based on designing a multi-construction site for "Cybersecurity City", incorporating various icons relevant to the game environment (manual and electrical equipment / buildings under construction / technical devices / monitoring and control room / ...). • The participant explores the construction site to complete various construction operations. During this journey, they encounter diverse cyber questions and must answer them to obtain assistance tools that enable them to perform required tasks, thereby earning coins and continuing gameplay. • Upon reaching a specified number of coins and completing all required tasks in the first level, the participant advances to subsequent game levels (the game consists of 4 progressively challenging levels). • When providing an incorrect answer to a puzzle, the participant does not receive assistance tools but is granted additional attempts to answer again and earn a reduced number of points. Application Objectives • Raise awareness of key cybersecurity principles, foundations, and digital safety rules applicable to participants' various daily activities. • Deliver highly specialised cybersecurity information directly relevant to the expatriate workforce segment, specifically addressing their knowledge requirements in this domain. • Provide participants with engaging entertainment through various progressively challenging questions. • Familiarise participants with essential cybersecurity terminology through smooth cognitive mechanisms featuring engaging elements that motivate achievement and success. • Deliver clear, simplified gameplay experiences based on direct question-and-answer formats, suitable for the educational and cultural characteristics of the expatriate workers segment. Application Fundamentals • Game Environment: A multi-construction site where the participant explores. • Game Elements: Various icons within the construction site environment. When the participant stands on the icons, questions and puzzles appear which must be solved to obtain assistance tools for performing various tasks. These elements include: buildings under construction/ construction tools and equipment/ monitoring room/... . • Game Puzzles: A collection of questions centred on various cybersecurity topics. Correct answers earn the participant assistance tools. • Assistance Tools: A set of tools obtained through correct answers to cyber puzzles. These tools assist in performing required tasks, such as: specific tools/ access to task locations/ selection between task-related elements/ ... . • Coins: Rewards collected by the participant upon completing required tasks. Upon reaching a specified number of coins within each level, the participant advances to the next game level.

About

ZeroDay Dev

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.

Highlights
  • Hands-on coding challenges
  • Real-world exploit analysis
  • Interactive practice exercises
  • Curated learning tracks
  • Progress tracking and gamification
  • Offline-first functionality
Features
Read full description

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.

Screenshots

Cybersecurity City4 screens
ZeroDay Dev4 screens

Verdict

The call

The clearest difference is in-app purchases: Cybersecurity City at none against ZeroDay Dev's 1. Cybersecurity City also leads on iOS requirement (12.0 vs 17.0). On price, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. ZeroDay Dev sells 1 one-off in-app purchase. Cybersecurity City asks for nothing beyond the download.

Scorecard2 real differences · 8 level
Cybersecurity City versus ZeroDay Dev: the parameters behind the verdict, then further details
ParameterCybersecurity CityZeroDay Dev
PriceFreeFree
Rating—4.8 (4 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—4 — better
Update frequency—Weekly
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better17.0
Further details — not scored
Size66 MB80 MB
Age rating4+4+
DeveloperYAHYA SAYED OMARJohn Lawniczak

In-app purchases

None

Cybersecurity City

No in-app purchases

1 purchases

ZeroDay Dev

One-time1
  • Unlock All Content$4.99

Questions

Is Cybersecurity City free?
Cybersecurity City is free to download, with no in-app purchases.
Is ZeroDay Dev free?
ZeroDay Dev is free to download, with in-app purchases available.
Do Cybersecurity City or ZeroDay Dev have ads?
Neither Cybersecurity City nor ZeroDay Dev shows ads.

Other comparisons