Best Iq Challenge Book Apps & Games

238+ iOS apps & games curated and reviewed

3.9 avg rating
19 free apps & games
Updated October 2026

Looking for free iq challenge book apps and games? 19 of our 238+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Compare top Iq Challenge Book Apps & Games (October 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1IQ Challenge BookIQ Challenge BookFree5.0★ (1)NoNoAug 2026
2IQ Test Brain Training RiddlesIQ Test Brain Training RiddlesFree4.4★ (8K)NoYesOct 2026
3I.Q. - TestI.Q. - TestFree2.9★ (7)NoYesSep 2026
4The IQ Test : Lite EditionThe IQ Test : Lite EditionFree4.5★ (125)NoYesOct 2026
5What's my IQ?What's my IQ?Free4.3★ (182)YesYesSep 2026
6IQ Test InternationalIQ Test InternationalFree2.5★ (8)YesYesSep 2026
7IQ Test ClassicIQ Test ClassicFree3.6★ (65)YesYesOct 2026
8Real IQ TestReal IQ TestFree4.1★ (152)YesNoOct 2026

Top Picks for Iq Challenge Book

5.0(1 ratings)
Free
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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 Test Brain Training Riddles#2

IQ Test Brain Training Riddles by Paul Stelzer

Improve your brain power
Strong Contender
🎮 Games
4.4😞(8K ratings)
FreeIn-App Purchases
IQ Test Brain Training Riddles screenshot 1
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Engage in a free IQ test and brain-training exercises designed to boost cognitive skills. Scientifically developed, this app offers various tasks to improve processing speed, memory, and logical thinking. Compare your scores with friends and track your progress.

What We Love

  • 🤔 Challenging and engaging
  • 💡 Interesting concept for an IQ app
  • 👍 Good for brain exercise

Room to Improve

  • 🐛 Grammatical errors and poor translations
  • 💸 Paywall for answers and explanations
  • 🤯 Confusing and unclear instructions
  • 🤖 Inaccurate or inconsistent IQ scoring
I.Q. - Test#3

I.Q. - Test by Pedro Navarro

Calculate your IQ
Worth Considering
🎮 Games
2.9(7 ratings)
FreeIn-App Purchases
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Calculate your intelligence quotient with this app. Perform various tests, including a time-trial mode, and share them with family and friends to see who is the most intelligent. Create multiple user profiles to track progress and compare results.

More Iq Challenge Book apps to explore

FAQ about Iq Challenge Book

What are the best iq challenge book apps & games for iPhone?
IQ Challenge Book tops our iq challenge book apps & games ranking as of October 2026, with a 5.0-star average from 1 App Store ratings, and it's free to download.
Yes — 19 of the top iq challenge book apps & games we rank are free to download, including IQ Challenge Book and IQ Test Brain Training Riddles.
IQ Challenge Book has no ads and has no in-app purchases, according to its App Store listing as of October 2026.
We track 238+ iq challenge book apps & games on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.