# Numsy vs Hacktivate

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.

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.

## The numbers

| Metric | Numsy | Hacktivate |
| --- | --- | --- |
| Price | **Free** | $19.99 |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/hacktivate-education-edition/id6754342195/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 21 months | **Every 9 days** |
| Monetization | **Free** | Paid |
| Size | 8 MB | 184 MB |
| Requires iOS | **16.6** | 26.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Stephan Lindow](https://appshunter.io/developer/1516183961) | [Hudson Heavy Industries](https://appshunter.io/developer/1727337256) |

## What reviewers say

### Numsy

[App page](https://appshunter.io/ios/app/numsy/id1516183962)

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.

**Highlights:** Binary conversion, Hexadecimal conversion, Decimal conversion, Mental math practice, Computer science applications

**In-app purchases:** none


### Hacktivate

[App page](https://appshunter.io/ios/app/hacktivate-education-edition/id6754342195)

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.

**Highlights:** 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)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Numsy free?

Numsy is free to download, with no in-app purchases.

### Is Hacktivate free?

Hacktivate costs $19.99, with no in-app purchases.

### Do Numsy or Hacktivate have ads?

Neither Numsy nor Hacktivate shows ads.

### Which is updated more often, Numsy or Hacktivate?

Numsy ships an update every 21 months, and Hacktivate every 9 days. Most recently, Numsy was updated on October 10, 2026 and Hacktivate on October 25, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*