Comparison

IQ Challenge Book vs Enigma

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

Head to head
About

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.

Highlights
  • IQ score determination
  • Intelligence level assessment
  • IQ score categorization
  • Test your limits
  • User-friendly interface
Features
Read full description

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!

About

Enigma

Features
Read full description

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

IQ Challenge Book4 screens
Enigma4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

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.

Scorecard2 real differences · 7 level
IQ Challenge Book versus Enigma: the parameters behind the verdict, then further details
ParameterIQ Challenge BookEnigma
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 76 monthsEvery 3 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.013.0 — better
Further details — not scored
Size1 MB466 MB
Age rating4+4+
DeveloperAdrian MincaCorey Clark

In-app purchases

None

IQ Challenge Book

No in-app purchases

None

Enigma

No in-app purchases

Questions

Is IQ Challenge Book free?
IQ Challenge Book is free to download, with no in-app purchases.
Is Enigma free?
Enigma is free to download, with no in-app purchases.
Do IQ Challenge Book or Enigma have ads?
Neither IQ Challenge Book nor Enigma shows ads.
Which is updated more often, IQ Challenge Book or Enigma?
IQ Challenge Book ships an update every 76 months, and Enigma every 3 months. Most recently, IQ Challenge Book was updated on October 24, 2026 and Enigma on October 25, 2026.

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