BlueChess vs IQ Challenge Book
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
BlueChess
Engage in strategic gameplay with powerful chess engines. Choose between the BlueChess engine or the highly-rated Stockfish engine for your matches.
- Play against BlueChess engine
- Play against Stockfish engine
- Strategic gameplay
- Free to play
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Play a game of chess against the BlueChess engine or the Stockfish engine.
IQ Challenge Book
Assess your intelligence level with this application that provides an IQ score based on your answers to a series of questions. It categorizes your score according to a standard IQ scale, ranging from genius to feeble-mindedness. Test your limits and discover your intelligence quotient.
- IQ score determination
- Intelligence level assessment
- IQ score categorization
- Test your limits
- User-friendly interface
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Have you ever wondered how smart you are compared to the people in your life, or even compared to all people your age? You can get a good idea of your intelligence level by determining your IQ. An IQ, or intelligence quotient, is a score you receive on a test that assesses intelligence. The following scale resulted for classifying IQ scores: IQ Scale Over 140 - Genius or almost genius 120 - 140 - Very superior intelligence 110 - 119 - Superior intelligence 90 - 109 - Average or normal intelligence 80 - 89 - Dullness 70 - 79 - Borderline deficiency in intelligence Under 70 - Feeble-mindedness After you answer to all questions, just click on the Final Result button. This app will test your limits!Enjoy!
Screenshots
Verdict
The clearest difference is update cadence: BlueChess at every 4 months against IQ Challenge Book's every 76 months. On price, rating, ratings volume 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for BlueChess against 5.0 for IQ Challenge Book. Both are backed by a comparable volume of ratings — 2 and 1 respectively.
BlueChess ships an update every 4 months, IQ Challenge Book every 76 months. The most recent releases landed on September 19, 2026 and August 31, 2026 respectively.
| Parameter | BlueChess | IQ Challenge Book |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) | 5.0 (1 ratings) |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 2 — better | 1 |
| Update frequency | Every 4 months — better | Every 76 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 55 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | GreenChess.com | Adrian Minca |
Customer experience
BlueChess
IQ Challenge Book
In-app purchases
BlueChess
No in-app purchases
IQ Challenge Book
No in-app purchases
Questions
Is BlueChess free?
Is IQ Challenge Book free?
Which has better reviews, BlueChess or IQ Challenge Book?
Do BlueChess or IQ Challenge Book have ads?
Which is updated more often, BlueChess or IQ Challenge Book?
Other comparisons
