Numsy vs Hacktivate
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Numsy
Master numeral system conversions between binary, hexadecimal, and decimal. This tool is designed for computer professionals to quickly convert numbers mentally for tasks like IP addresses and color codes.
- Binary conversion
- Hexadecimal conversion
- Decimal conversion
- Mental math practice
- Computer science applications
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Practice the conversion between binary, hexadecimal, and decimal numbers. If you work with computers, you may want to be able to convert these numbers in your head—whether for IP addresses, color codes, or other uses. This app can help you achieve that goal.
Hacktivate
Engage in cybersecurity challenges with 240 real-world hacking technique missions. Progress through a global map, learning encryption, steganography, and more. Designed for educational use, it offers scalable difficulty and comprehensive tutorials.
- 240 graded cybersecurity missions
- Real-world hacking techniques
- Global progression map
- Hacker's Toolbox (hashing, encryption, XOR)
- Unix terminals and web browsers
- Scalable difficulty
- Cross-platform sync (iPhone, iPad, Mac)
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Crack codes. Break firewalls. Conquer the map. Hacktivate is the ultimate cybersecurity challenge: a world map of 240 missions where every puzzle is built on real cybersecurity techniques hackers use. From classic ciphers to covert steganography, you’ll sharpen your brain while infiltrating deeper into the network. No fluff. No filler. Just pure challenges. Hacktivate: Education Edition is the same as the regular Hacktivate app, except it's paid up front so that schools and colleges can use it. - 240 graded missions across the Americas, Europe, Asia, and more – unlock all the continents with a one-time purchase. - The Hacker’s Toolbox: hashing, encryption, XOR, ciphers, and beyond. - Real-world attack techniques through Unix terminals, web browsers, digital forensics, SQL injection, and more. - Global progression: unlock regions and learn different specialties each time. - Comprehensive tutorials and documentation teach you the skills you need to win. - Difficulty that scales: from rookies breaking their first code to cyber masterminds cracking the strongest firewalls. - Play on iPhone, iPad, and Mac with a single purchase – your progress is auto-synced. Every lock is a challenge. Every mission is a test. Every solution pulls you deeper into the system. The network is waiting, and your mission starts now! Terms of service: https://www.apple.com/legal/internet-services/itunes/dev/stdeula Privacy policy: https://www.hacktivate.app/privacy
Screenshots
Verdict
The clearest difference is review sentiment: Hacktivate at 100% against Numsy's 0%. Hacktivate also leads on update cadence (every 9 days vs every 21 months). Numsy's advantage is price (Free vs $19.99) and iOS requirement (16.6 vs 26.0). On ads, in-app purchases 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
Numsy is free to download; Hacktivate costs $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Numsy ships an update every 21 months, Hacktivate every 9 days. The most recent releases landed on October 10, 2026 and October 25, 2026 respectively.
| Parameter | Numsy | Hacktivate |
|---|---|---|
| Price | Free — better | $19.99 |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | 0.0% of reviews | 100.0% of reviews — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 21 months | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad | iPhone, iPad, Mac — better |
| Requires iOS | 16.6 — better | 26.0 |
| Further details — not scored | ||
| Size | 8 MB | 184 MB |
| Age rating | 4+ | 4+ |
| Developer | Stephan Lindow | Hudson Heavy Industries |
Customer experience
Numsy
Hacktivate
In-app purchases
Numsy
No in-app purchases
Hacktivate
No in-app purchases









