IQ Test Brain Training Riddles – Paul Stelzer

Last updated on January 16th, 2026 at 07:38 am

IQ Test Brain Training Riddles – Education Game Review

IQ Test Brain Training Riddles Screenshot

IQ Test Brain Training Riddles is a Education/Word/Trivia game from Paul Stelzer, first launched in 13th February 2018.
It’s rated 4+ and currently has 7,964+ ratings on the App Store.

What Makes IQ Test Brain Training Riddles Stand Out

  • IQ Test completely in English and free to play
  • Brain booster with different tasks
  • Scientifically developed by students of the University of Rostock (Germany)
  • With excercise mode: Play all quiz tasks with solutions and explanations again
  • Many more great functions for the IQ Test are still planned
  • Compare your result with friends
  • In future: WIth Multiplayer Party Mode and quiz elements

Why should you take part of this IQ Test?

Influenced by WAIS-IV (Wechsler Intelligence Test for Adults) and research by students of the University of Rostock, the IQ Test includes the following tasks:

  • Perceptive reasoning
  • Processing speed
  • working memory
  • speech understanding
  • Number understanding
  • Logical thinking

These categories are queried in the IQ Test in various categories, including sample groups, dice test, remember pictures, number series, matrix test, estimate, order numbers and more!

Start your IQ Test now and compare with your friends! The first quiz has around 100 tasks, so take some time and start your IQ Test today! The test is free, but you can get extra features. This is a brain booster game.


With exercises

This app not only includes many IQ tests, you find also exercises and daily riddles to increase your brain power. You can solve daily one riddle of an IQ test.


What is an IQ Test?

An IQ test is used to show how "intelligent" you are in relation to other people. But what is intelligence? This is not a defined term and so intelligence is just what an IQ test measures. Therefore, different IQ tests can not be compared, just the same test, and it simply tells you if you have solved the tasks better (over IQ 100) or worse (under IQ 100) than the average. So do not take the IQ that seriously, just test how you cut off compared to others! This app is also developed for brain training.


Brain booster and brain training

To improve your brain performance, we have added numerous tasks and exercises in the IQ Test app that will increase your performance. So if you are about to take an employment test or a psychological test, you can use it to train your brain and get a better result. The tasks are not only in the IQ test area, but also help to improve logical thinking, math and more.


Information about in-app purchases and subscriptions

There is a Pro subscription in the app. The following notes apply:

  • The Pro Subscription offers you additional IQ Test functions such as explanations, further tests, numerous exercises and much more.
  • The Pro subscription is valid for 1 month and will be automatically extended for this period if you do not cancel 24 hours before the end of the period. Your account will be charged within 24 hours before the end of the subscription.
  • Payment is made through your App Store account. You can deactivate the IQ Test Pro subscription and the automatic renewal via App Store.
  • If you cancel the subscription, it will remain valid in the IQ Test app until the end of the purchased period.
  • Terms of Use: https://iqtest-app.de/en/terms-and-conditions/

This Education game offers engaging gameplay and regular updates for mobile players.

Player Feedback

As a newer release, IQ Test Brain Training Riddles is building its player community. Early feedback suggests .

Recent Updates & Development

Latest Update: 18th October 2025

Recent improvements include:
Thank you for all your support, numerous messages and reviews, only this way the IQ Test app will get better and better.

  • More improvements: We have fixed more bugs!

Download & Availability

IQ Test Brain Training Riddles is available through the official App Store for iOS devices.

Get IQ Test Brain Training Riddles on App Store

Requirements: Requires iPhone 5s / iPad Air / iPad Air (Cellular) / iPad Mini 2 (Retina) / iPad Mini 2 (Retina, Cellular) / iPhone 6 / iPhone 6 Plus / iPad Air 2 / iPad Air 2 (Cellular) / iPad Mini 3 or later.

Compatible with iPhone and iPad devices.

Player Experience Highlights

Community Insight:

App was okay. We made two purchases to make it tolerable. App upgraded whilst we were on break in middle of test. We lost our test and am now flooded with that stupid Royal Match ad. You want to make some real money? Make an app that stops an ad from relentlessly repeating if youve installed any deleted the product on your phone. Anyway, back to the review of this app. Restore purchases button does nothing. We recommended this app only if you love Royal Match ads and NEVER purchase any upgrades.


We found misspelled words and errors.


We always wanted to figure out our IQ.


It might be a bit slow and slightly inaccurate, but it's still good.


We went through the first ten tests even though several of the questions had errors in English, missi no words in sentences, and information left out of questions so an answer could not be had. One question was a math problem but failed to put the beginning number in the question which made it impossible to determine just how many Friends came to the BD party. It is a mess. Dont bother.


Just downloaded the app but all Im seeing is a white blank screen.


We only have a blank page when we open the app. Switched on and off wifi and cell. Both work fine. Restarted phone and redownloaded app. Let it sit for 10 mins to load or something. Still nothing. Idk but yall need to fix this. Or maybe we just have too low of an IQ to resolve this ourselves.


This app has helped diminish our brain fog. As we get older, our day to day has become intuitive and practically muscle memory. This App has sharpened our critical thinking abilities and helped us to focus more on details and memory. Thank you developers. Youre helping an old dog remember how sharp our brain used to be and getting that back.


Yeah idea behind it was very good. Potential – The English is improper – Make everything free! More people will use it. – make the features more enhanced – Keep the simplicity.


Your not Smart like us lol l noob.


It is the only app that has actually told us our iq for free 10/10 experience would do again.


Not as easy as you might think it to be.


This app is great. To it's creators, thank you so much.


You should like pay for know what are the answers, and Im not paying $5 on a mobile app, and is probably on month, is good the app but you should pay for know the things. (_).


We took this test and got about average for our age. Its a great free way to find out your IQ, and yes it is FREE! This took about 25 minutes for us to take. You should definitely download if you wanna know your IQ! :).


ACCORDING TO THIS GAME IM A GENIUS TRY.


The results are super good and detailed totally worth the time.


This IQ Quiz will definitely provide any individual with an abundance of time they can spend learning to develop skills such as: spacial reasoning, pattern recognition, and vocabulary analysis. This apps ability to challenge a person and keep him/her/them intellectually engaged is astounding. The creators of it allow for explanation of each solution and give understandable reasons behind each answer. An individuals intellectual abilities will certainly be tested, which is precisely what we were looking forward to. We enjoy that you are given options to develop and define your study and practice techniques. Some options do require in-app purchases. However, there are certain options fully free and available without needing to make any purchases or subscribe to anything which is nice if you just want to learn an approximate score for your IQ, compared to others. Hope you have an awesome time with this app.


Had no issues using the app and it was a lot of fun to do! We had none of the troubles of the other review. Great questions and fun with the timers.


We are so happy to see if we are still in the high end of our brain lol we love the app.


A lot of fun! At the end of each task A message tells you if youve mastered or not. We thought we could see our results at the end of the entire test, but not.


The English version is lacking clarity in several questions as it has been roughly translated from German. Some of the example questions can have more than one solution, so they can be a bit frustrating. Otherwise, its a great app.


We only did the first iq test, and decided to compare with our friends. However, instead of showing points (idk what that means) it should also show iq.


Works great tells you when you have mastered the test comes with several tests to test your logic.


We do not understand much of it. . .strange reasoning.


Just started using still in eval but we like it. Only it should explain the answers for free in the testing.


We think it would be a great app if you were told the answers without being required to upgrade or purchase. Otherwise its worthless and your better off finding another app to play.


Unfortunately there were a lot of grammar and spelling errors that were distracting and made some questions very difficult to understand.


This app has lots of potential. However, the developer needs to hire an editor who is a native English speaker to clean up the many grammar and usage errors.


Feel like Im wasting our time since we have no idea how well Ive done.


We dont think this is actually an accurate IQ test. We didnt get any results because we didnt even make it that far before realizing some of the questions dont even have the correct answer as an option. For example they will give you a list of letters and ask you which word (out of a certain word list) you could spell by rearranging the letters given. But none of the words will contain all of the letters given. And it doesnt take High IQ to read so anyone could see that theres no way to answer that question correctly from the choices given. And then they try to sell you the right answer by giving you the option to buy their membership in order to view this correct answer. The only IQ test here is if you take this app seriously you probably dont have a very high IQ.


Overall great brain test but online we can zoom in to see smaller puzzle details -on app cannot.deleting.


Its difficult to concentrate when every few minutes you see unrelated ad pop ups or a purchase now! Screen.


Our only problem with the app is it doesnt give you your IQ it only gives you certain weird number we recommend that you dont get this app and you should try another. And it gets really confusing because you dont really know which places to go if you wanna get a certain IQ test again we recommend a different one if you trying to get an app and tell your IQ.


Watched a few videos to see the answers to a few questions we thought the test might get wrong. Sure enough they had the correct answer marked wrong and the incorrect answer marked correct. Yikes.


Fun. Lots of typos which unfortunately matter for the answer to some questions. No feedback. Gotta buy for that. Plenty others out there and on the web for free and with much more coordination. But Im way smarter than the developers apparently, according to the app. Class of our own.


Some questions are not translated into English correctly, so cant tell what they mean exactly.


The grammatical errors are astounding. Half of the questions are unable to be understood because of this issue. Instructions arent clear and therefore make you want to just stop altogether because being assigned an IQ by someone who cannot even form a correct sentence is more meaningless than printing a masters degree from a Microsoft word document, framing it, and believing you earned it from a legitimate university. Its crap. Dont waste your time.


So we were really excited for this app and The idea behind it. The biggest issue though is the grammatical errors in the questions that make 10 out of the 90 questions exceptionally difficult to understand what is expected, and 5 questions that are just totally incorrect phrases of speech that make answering them with a correct answer a change of luck, The video in the beginning there is why we assume a German or Nordic person, And the language barrier could definitely have caused those issues. But as an app that we download it in America for our English speaking self, we do expect the questions to be grammatically correct. Worth the free version, but cannot justify paying for a subscription when there are such obvious and notable errors in the questions.


We usually dont write reviews for the apps we download but this needed a review. We downloaded the app without purchasing the premium package. Right off the bat we see issues with the way the app is written. You should not need to purchase anything to at least see your result after each stage. Im not asking for details and the answers for each question but the developer should at least give you the statistics and show how youve done, at the minimum, with percentage of success. Dont tell us we did great and amazing after each stage. Be realistic and give accurate comments based on the level of success. We made our biggest mistake and purchased their so called premium package. Well after going through three different IQ tests now we get the notice that they are working on new IQ test and that it will be available shortly. Well shortly is now on day 5! We dont want to pay all this money to seat around and wait for new IQ tests. Shouldnt an app have at least 20-30 different IQ tests? Why do we have to do repeats when that would not really give us any realistic sense of how Ive done. We really have to cut this short as we have many comments about the available 3 IQ tests. Grammar, logic and poorly written questions. We wish we could get our money back as we made the biggest mistake of purchasing this app.


So many grammatical and spelling errors within questions. Font sizes and styles vary between questions. Questions with shapes include colors that are so similar in hue its hard to distinguish between them. PAYWALL AFTER PAYWALL.


It is obvious the test formulators are not native English speakers and the phrasing of much of the content is not common or preferred usage and some is misusage of words and phrases and the verbiage is often grammatically awkward.


We didnt get much from it for free like we expected.


Typos throughout. Some questions dont make any sense.


The test seems like it was written by someone who has a poor grasp on the English language. Its really hard to put faith in a test to measure your intelligence when the people who made the test cant write the quiz with correct grammar.


There are so many typos and grammatical errors within this IQ test that we wouldnt trust the results at all. Im not mad because we did bad. We scored above average supposedly.


As soon as you launch the app, it forces you to a payment screen for a subscription of 40 dollars a month.


Really the text has many misspellings, and at times poor sentence structures. Believing this test is correct is a joke.


The app is not the best. The dashboard is awful and everything is too busy for functionality purchases. The tests repeat the same questions so no growth can be made. The worst part however is if you upgrade all the way to premium and do not get premium plus then you must wait 4.5 hours with the app running before you can take a second test. So fair to say the developer won the IQ for smartest con app. This APP IS WORSE THAN THE FREE TESTS YOU FIND ONLINE.


Im no dummy and have done well on tests of different sorts our whole life. This app made us feel like a moron. Theres too little explanation and multiple conclusions one can come to on any given question. Like how a triangle equals two and the round dots equal one on a particular excercise. Also many of the little shapes youre supposed to decipher value to are colored and hard to see. After the first round every question is followed by a request to upgrade (pay) to the full app or watch commercials.
User feedback from Apple App Store


App Details

  • Version: 14.6.1
  • Size: 72.62 MB
  • iOS: 14.0 or later
  • Languages: EN, FR, DE, IT, PT, ES
  • Content Advisory:
  • Developer: Paul Stelzer

Last updated: 18th October 2025 | Genre: Education, Word | Developer: Paul Stelzer

More pages for IQ Test Brain Training Riddles – Paul Stelzer