Numsy vs Keijaoh Tutorials
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.
Keijaoh Tutorials
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.
- Expert tutorials on Swift and SwiftUI
- Backend technology guidance
- Calculus lessons
- Business and Computer Science blogs
- Discussions on academic papers
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Introducing our comprehensive mobile app, designed to provide you with an immersive learning experience across various topics. Dive into our expert tutorials on Swift, SwiftUI, backend technologies, Calculus, and more, all tailored to help you master these subjects with ease. In addition to our educational content, you'll find insightful blogs covering Business, Computer Science, and even in-depth discussions on academic papers authored by our team. Enhance your knowledge and stay updated with our all-in-one app.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Numsy | Keijaoh Tutorials |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | — | 1 — better |
| Update frequency | Every 21 months | Every 6 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 8 MB | 11 MB |
| Age rating | 4+ | 17+ |
| Developer | Stephan Lindow | Keijaoh Campbell |
Customer experience
Numsy
Keijaoh Tutorials
In-app purchases
Numsy
No in-app purchases
Keijaoh Tutorials
No in-app purchases
