Comparison

Logic Riddle vs Einstein's secret book

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

Head to head
About

Logic Riddle

Engage your brain with a logic puzzle game that challenges you to deduce a scenario using only a set of clues. Solve thousands of riddles, from simple to complex, with daily challenges and helpful filters.

Highlights
  • Thousands of logic riddles
  • Daily free challenges
  • Increasing difficulty levels
  • Expert filters for hints
  • Mobile-optimized interface
  • Auto-save functionality
Features
Read full description

Master logic riddles: Pure deduction game. No guesses. Played and loved by millions since 2013. 5,000+ FREE puzzles. Compete live. Crush leaderboards. Clues like: "German owns a dog. The one who drinks coffee does not have a fox" • Endless Free Content: 5K+ single player logic puzzles – zero paywalls • Daily Fresh: 15 new Zebra Puzzles every day • Live Competition: Compete real-time worldwide – same puzzle, fastest wins. Rank in leaderboards. • Scale Up: Easy 4x4 to massive grids • Tutorial + Tools: Guided first solve + a clue filter that hides what you have already ruled out • Color Themes: Light, Dark and a range of colors – pick the one that suits the room you are in • New Modern Layout, optional: keeps the full clue list and the filter inside the match, so everything sits on one screen • Portrait or Landscape: Turn the phone sideways and the whole board follows • Built for Thumbs: Tap to cross out, hold to confirm – the grid does the bookkeeping NEW – TWO SHORTCUTS WORTH LEARNING • Drag the element to the clue panel to view clues of that element • Click the element in the clue panel to go to the next clue of that element Deduce the full grid. Logic lovers: this is your next obsession. Tutorial Video: https://www.youtube.com/watch?v=0bpjrJRZi9Q Community: https://www.facebook.com/groups/288035414684910/ Support: logic.ios@rottzgames.com Download free. Sharpen your edge today! Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

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.

Highlights
  • Biography of Albert Einstein
  • Scientific achievements overview
  • Chapter-based learning
  • Knowledge-testing challenges
  • Logic and dexterity games
  • Multilingual support
Features
Read full description

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

Screenshots

Logic Riddle4 screens
Einstein's secret book4 screens

Verdict

The call

The clearest difference is review sentiment: Logic Riddle at 90% against Einstein's secret book's 44%. Logic Riddle also leads on ratings volume (5.7K vs 2) and rating (4.8 vs 4.5). Einstein's secret book's advantage is ads (none vs shown) and update cadence (every 3 weeks vs every 3 months). On price, 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. Logic Riddle sells 1 in-app purchase, starting at $2.99 per year and Einstein's secret book sells 8 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Logic Riddle holds the better App Store score, 4.8 against 4.5. That said, the two scores are not equally well evidenced: Logic Riddle has 5.7K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 90% of Logic Riddle's written reviews are positive against 44% of Einstein's secret book's.

UpkeepUpdate frequency

Logic Riddle ships an update every 3 months, Einstein's secret book every 3 weeks. The most recent releases landed on November 6, 2026 and November 2, 2026 respectively.

Scorecard7 real differences · 3 level
Logic Riddle versus Einstein's secret book: the parameters behind the verdict, then further details
ParameterLogic RiddleEinstein's secret book
PriceFreeFree
Rating4.8 (5.7K ratings) — better4.5 (2 ratings)
Positive reviews90.5% of reviews — better44.4% of reviews
Number of ratings5.7K — better2
Update frequencyEvery 3 monthsEvery 3 weeks — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationAd-supported — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.012.0 — better
Further details — not scored
Size46 MB93 MB
Age rating4+4+
DeveloperRottz GamesGodline Studios Sociedad Limitada

Customer experience

Logic Riddle

All ratings5,712 ratings
Positive95.9%
Neutral2.3%
Negative1.9%
Written reviews461 reviews
Positive90.5%
Neutral4.8%
Negative4.8%

Einstein's secret book

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews9 reviews
Positive44.4%
Neutral22.2%
Negative33.3%

Bugs and requests

Logic Riddle

Reported bugs

4 issues
  • Clues not always sufficient to solve puzzles
  • Laggy performance on some devices
  • Occasional glitches with filtering and selecting
  • Ads interfering with gameplay and concentration

Requested features

5 requests
  • Option to take notes or link clues
  • Ability to highlight related objects
  • Varied themes and visual elements
  • Hint system for stuck puzzles
  • Offline mode or cloud sync

Einstein's secret book

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Logic Riddle

Subscriptions1
  • Premium14 Days trial$2.991 Year
8 purchases

Einstein's secret book

One-time8
  • Add live$0.99
  • Remove ads$1.99
  • Donate$1.99
Show 5 more
  • Remove ads2 variants$2.99
  • Donate$2.99
  • Donate$4.99
  • Donate$8.99
  • Donate$17.99

Questions

Is Logic Riddle free?
Logic Riddle is free to download, with in-app purchases available.
Is Einstein's secret book free?
Einstein's secret book is free to download, with in-app purchases available.
Which has better reviews, Logic Riddle or Einstein's secret book?
Logic Riddle is rated higher. Logic Riddle averages 4.8 out of 5 from 5.7K ratings, while Einstein's secret book averages 4.5 from 2 ratings.
Do Logic Riddle or Einstein's secret book have ads?
Logic Riddle shows ads; Einstein's secret book does not.
Which is updated more often, Logic Riddle or Einstein's secret book?
Logic Riddle ships an update every 3 months, and Einstein's secret book every 3 weeks. Most recently, Logic Riddle was updated on November 6, 2026 and Einstein's secret book on November 2, 2026.

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