# Numsy vs Keijaoh Tutorials

The clearest difference is update cadence: Keijaoh Tutorials at every 6 months against Numsy's every 21 months. On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Numsy ships an update every 21 months, Keijaoh Tutorials every 6 months. The most recent releases landed on September 8, 2026 and June 12, 2026 respectively.

## The numbers

| Metric | Numsy | Keijaoh Tutorials |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/keijaoh-tutorials/id1610343608/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 21 months | **Every 6 months** |
| Monetization | Free | Free |
| Size | 8 MB | 11 MB |
| Requires iOS | **16.6** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Stephan Lindow](https://appshunter.io/developer/1516183961) | [Keijaoh Campbell](https://appshunter.io/developer/1528857942) |

## 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


### Keijaoh Tutorials

[App page](https://appshunter.io/ios/app/keijaoh-tutorials/id1610343608)

Access expert tutorials on programming, math, and business. Explore insightful blogs and academic discussions to deepen your understanding and stay current with your chosen fields. This app offers a comprehensive platform for continuous learning and personal growth.

**Highlights:** Expert tutorials on Swift and SwiftUI, Backend technology guidance, Calculus lessons, Business and Computer Science blogs, Discussions on academic papers

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Numsy free?

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

### Is Keijaoh Tutorials free?

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

### Do Numsy or Keijaoh Tutorials have ads?

Neither Numsy nor Keijaoh Tutorials shows ads.

### Which is updated more often, Numsy or Keijaoh Tutorials?

Numsy ships an update every 21 months, and Keijaoh Tutorials every 6 months. Most recently, Numsy was updated on September 8, 2026 and Keijaoh Tutorials on June 12, 2026.

---

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