# Cjexplorer vs Prime Numbers Math Games

The clearest difference is rating: Cjexplorer at 5.0 against Prime Numbers Math Games's 3.0. Cjexplorer also leads on iOS requirement (15.0 vs 17.2). On price, ratings volume, update cadence and ads there is nothing between them.

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

Cjexplorer holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 1, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Cjexplorer | Prime Numbers Math Games |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cjexplorer/id6477356973/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/prime-numbers-math-games/id6737446154/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free | Free |
| Size | 100 MB | 3 MB |
| Requires iOS | **15.0** | 17.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Wing Shun Vincent Chu](https://appshunter.io/developer/1723514678) | [Tsz Poon](https://appshunter.io/developer/1462001466) |

## What reviewers say

### Cjexplorer

[App page](https://appshunter.io/ios/app/cjexplorer/id6477356973)

Easily find Cangjie, Pinyin, Onyomi, and Kunyomi codes for Chinese characters. Features include clipboard lookup, live camera scanning of text or objects, and pronunciation synthesis. Supports Korean Hanja lookup, all processed on-device.

**Highlights:** Clipboard character lookup, Live text camera scanning, Live object camera scanning, Pinyin pronunciation synthesis, Korean Hanja lookup, On-device processing

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Prime Numbers Math Games

[App page](https://appshunter.io/ios/app/prime-numbers-math-games/id6737446154)

This app offers interactive lessons and games to help users learn and practice prime numbers, HCF, and LCM. It provides clear explanations, timed challenges, and adjustable difficulty levels for focused math revision and skill-building.

**Highlights:** Learn prime number concepts, Practice HCF and LCM calculations, Interactive number challenges, Timed game modes, Adjustable difficulty levels, Clear learning screens

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Cjexplorer free?

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

### Is Prime Numbers Math Games free?

Prime Numbers Math Games is free to download, with no in-app purchases.

### Which has better reviews, Cjexplorer or Prime Numbers Math Games?

Cjexplorer is rated higher. Cjexplorer averages 5.0 out of 5 from 1 ratings, while Prime Numbers Math Games averages 3.0 from 2 ratings.

### Do Cjexplorer or Prime Numbers Math Games have ads?

Neither Cjexplorer nor Prime Numbers Math Games shows ads.

### Which is updated more often, Cjexplorer or Prime Numbers Math Games?

Cjexplorer ships an update every 3 weeks, and Prime Numbers Math Games every 3 weeks. Most recently, Cjexplorer was updated on October 1, 2026 and Prime Numbers Math Games on October 16, 2026.

---

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