IQ Challenge Book vs Enigma
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
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!
Enigma
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SOLVE PUZZLES TO BUILD LITERACY Transform your literacy skills with engaging, puzzle-solving gameplay. Learn to recognize letters, build words, and read and write sentences by deciphering the ancient language of Atlantis. PRACTICE EVERYDAY SKILLS Play fun, timed mini-games that test your reading skills in everyday situations, from figuring out a bus schedule to paying the correct amount of cash when you go shopping. PLAY IN ENGLISH OR SPANISH Whether you are a native English speaker looking to boost your literacy skills or a Spanish speaker learning to read English, we support you with instructions delivered in your native language. VISIT REAL-WORLD LOCATIONS Visit real locations in Peru. UNLOCK THE SECRETS OF ATLANTIS Seek out hidden ancient relics and energize the mysterious crystals that power Atlantis. As you learn more, you can dig deeper into the history of the once great civilization. WHY WE MADE THIS GAME In the United States alone, 32 million adults cannot read, including almost 20% of high-school graduates. Reading is a key skill in today’s modern, fast-paced, and dynamic lifestyle. Programs targeting our adult learner population are few and far between. Engima: Essentials I presents a new approach to learning, combining university developed and tested teaching methods with the game development expertise of industry professionals and a premier game development university program. We focus on how adults learn to read and respect their sensibilities and character, while still making a game suitable for all ages.
Screenshots
Verdict
The clearest difference is update cadence: Enigma at every 3 months against IQ Challenge Book's every 76 months. Enigma also leads on iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and device support 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.
IQ Challenge Book ships an update every 76 months, Enigma every 3 months. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.
| Parameter | IQ Challenge Book | Enigma |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 76 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 466 MB |
| Age rating | 4+ | 4+ |
| Developer | Adrian Minca | Corey Clark |
In-app purchases
IQ Challenge Book
No in-app purchases
Enigma
No in-app purchases









