Comparison

Cjexplorer vs Prime Numbers Math Games

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Cjexplorer

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
Read full description

CJExplorer is a fast, private reference tool for anyone who studies, types, reads, or teaches Chinese characters. Look up the Cangjie input code, Mandarin Pinyin, Cantonese Jyutping, Japanese Onyomi and Kunyomi readings, and Korean Hanja/Hangul information for Chinese characters in seconds. Copy a character, scan printed text with the live camera, or point the camera at an object and let on-device AI identify the related Chinese word for lookup. Whether you are learning Cangjie, checking Mandarin pronunciation, reading Cantonese, comparing Kanji readings, or working with Korean Hanja, CJExplorer keeps the answer close without forcing you into a heavy dictionary workflow. Key features: 1. Clipboard lookup for quick Cangjie, Pinyin, Jyutping, Japanese reading, and Hanja reference. 2. Live OCR camera lookup for Chinese characters and Korean Hangul romanization. 3. Object camera mode that recognizes everyday objects and shows the related Chinese word and codes. 4. Built-in Mandarin pronunciation to help learners hear the word. 5. On-device processing, so lookups stay private and the app does not need internet access. Buy CJExplorer once and keep a practical Chinese character companion ready whenever a character, reading, or input code slows you down.

About

Prime Numbers Math Games

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
Read full description

Prime Numbers Math Games helps you learn and practise prime numbers, HCF, and LCM through simple lessons and quick number challenges. Start with clear learning screens, then test your number skills in interactive games. You can practise identifying prime numbers, play timed challenges, and build confidence with HCF and LCM calculations. Main Features: • Learn what prime numbers are • View prime number examples from 1 to 100 and beyond • Practise prime number identification • Play classic and timed challenge modes • Learn and practise HCF calculations • Learn and practise LCM calculations • Choose difficulty levels for different practice needs • Clean, simple interface for focused learning • No data collection Why Use This App: Prime numbers, HCF, and LCM are important foundations in mathematics. This app turns number practice into short, focused activities that are easy to understand and quick to play. Suitable for: • Learners practising number skills • Students reviewing prime numbers, HCF, and LCM • Parents supporting math revision • Teachers looking for a simple classroom practice tool • Anyone who enjoys mental math and number puzzles Build your number sense one challenge at a time.

Screenshots

Cjexplorer4 screens
Prime Numbers Math Games4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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

Scorecard2 real differences · 8 level
Cjexplorer versus Prime Numbers Math Games: the parameters behind the verdict, then further details
ParameterCjexplorerPrime Numbers Math Games
PriceFreeFree
Rating5.0 (1 ratings) — better3.0 (2 ratings)
Positive reviews100.0% of reviews—
Number of ratings12 — better
Update frequencyEvery 3 weeksEvery 3 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.2
Further details — not scored
Size100 MB3 MB
Age rating4+4+
DeveloperWing Shun Vincent ChuTsz Poon

In-app purchases

None

Cjexplorer

No in-app purchases

None

Prime Numbers Math Games

No in-app purchases

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.

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