Einstein's secret book vs Intelligence Test
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Einstein's secret book
Explore Albert Einstein's life and scientific achievements through an interactive book. Engage in various tests covering music, geography, the universe, and logic to challenge your knowledge and complete the book.
- Biography of Albert Einstein
- Scientific achievements overview
- Chapter-based learning
- Knowledge-testing challenges
- Logic and dexterity games
- Multilingual support
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Einstein's secret book is an app that reviews the events of the life of Albert Einstein, as well as his achievements as a scientist The book is divided in several chapters and each one of them covers a different topic. You will be faced with different tests that will challenge your knowledge in music, geography, the universe, famous inventors... as well as your logic, dexterity, memory... A set of tests, where you will have to use all your potential to complete the book. The user will also learn interesting things about Einstein's life and curious facts, related to the content of the tests. It is a complex game, that not everybody is able to succesfully complete. Do you want to try? Available languages: - Spanish - English - French - Italian - Portuguese - Chinese - Japanese - Korean
Intelligence Test
Discover your IQ with a free intelligence test. Get instant results to see if you measure up to genius levels. This game offers a quick way to assess your cognitive abilities.
- Free intelligence test
- Instant IQ score
- Assess cognitive abilities
- Suitable for all ages
- Available on iOS devices
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Is your IQ score high enough to be considered a genius? Take this free intelligence test and see your score instantly!
Screenshots
Verdict
The clearest difference is update cadence: Einstein's secret book at every 3 weeks against Intelligence Test's every 5 months. Einstein's secret book also leads on review sentiment (44% vs 30%). Intelligence Test's advantage is ratings volume (18 vs 2). On price, rating, ads and in-app purchases 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. Einstein's secret book sells 8 one-off in-app purchases and Intelligence Test sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.5 for Einstein's secret book against 4.6 for Intelligence Test. That said, the two scores are not equally well evidenced: Intelligence Test has 18 ratings behind it against 2, so its average is the more settled of the two. Written reviews are what separate them: 44% of Einstein's secret book's written reviews are positive against 30% of Intelligence Test's.
Einstein's secret book ships an update every 3 weeks, Intelligence Test every 5 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.
| Parameter | Einstein's secret book | Intelligence Test |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (2 ratings) | 4.6 (18 ratings) — better |
| Positive reviews | 44.4% of reviews — better | 30.0% of reviews |
| Number of ratings | 2 | 18 — better |
| Update frequency | Every 3 weeks — better | Every 5 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 93 MB | 56 MB |
| Age rating | 4+ | 4+ |
| Developer | Godline Studios Sociedad Limitada | Horea Bucerzan |
Customer experience
Einstein's secret book
Intelligence Test
In-app purchases
Einstein's secret book
- Add live$0.99
- Remove ads$1.99
- Donate$1.99
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- Remove ads2 variants$2.99
- Donate$2.99
- Donate$4.99
- Donate$8.99
- Donate$17.99
Intelligence Test
- Extra Content + Ad-Free$3.99
Questions
Is Einstein's secret book free?
Is Intelligence Test free?
Which has better reviews, Einstein's secret book or Intelligence Test?
Do Einstein's secret book or Intelligence Test have ads?
Which is updated more often, Einstein's secret book or Intelligence Test?
Other comparisons
