Comparison

Eidetic Memory Championship vs The Einstein`s Riddle

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

Head to head
About

Eidetic Memory Championship

This brain training game challenges you to memorize digits shown on screen as quickly as possible. It offers both a normal mode for practice and a difficult mode for advanced players. Improve your visual memory and unlock your potential through repeated play.

Highlights
  • Memorize digits on screen
  • Timed challenges
  • Normal training mode
  • Expert hard mode
  • Improve visual memory
Features
Read full description

Eidetic Memory It is a special ability of wonder that memorizes the image seen by the eyes in a flash like a picture. "Eidetic Memory Championship" is a brain training game that may bring out your unknown ability. The way is simple. Just remember several digits on the screen and hit it as quickly as possible. You can play in normal mode that is right for training and hard mode that only experts can clear. The hard mode may be quite difficult, but as you realize the feeling of burning the screen on your eyes it will gradually become solvable. Play many times and get "Eidetic Memory".

About

The Einstein`s Riddle

Engage your mind with challenging logic puzzles, including a modern take on the classic 15 Puzzle and the timeless Peg Solitaire. Test your reasoning skills with evolving rules and progressive difficulty across various game modes, designed to keep your brain sharp and active.

Highlights
  • Logic puzzle experience
  • Slide Puzzle (15 Puzzle)
  • Peg Solitaire
  • Multiple game modes (Classic, Timer, Challenge)
  • Progressive campaign mode
  • Modern visuals and animations
  • Brain training exercises
Features
Read full description

Einstein’s Riddle is a logic puzzle experience designed to challenge your mind and reasoning skills. Do you dare to face the riddle Albert Einstein claimed was impossible for 98 percent of the population? Discover if you belong to the 2 percent who truly master logical thinking. In Einstein’s Riddle, classic logic puzzles are presented with modern visuals, smooth animations and evolving rules that constantly challenge the way you think. Every move matters and every decision has consequences. This game pushes your mental limits in an experience where logic and controlled chaos go hand in hand. Slide Puzzle (15 Puzzle) Arrange the board, race against time and adapt to changing rules inspired by Einstein himself. The classic 15 Puzzle returns with progressive difficulty and multiple game modes that demand strategy and quick thinking. Available game modes include 1. Classic Mode, solve puzzles at your own pace with no time pressure 2. Timer Mode, race against the clock and improve your performance 3. Challenge Mode, each level introduces new mechanics such as bombs, frozen tiles and locked pieces Campaign mode features progressive worlds with 3x3, 4x4 and 5x5 boards. Each stage increases difficulty and introduces new mechanics, creating a true test of logic, memory and focus. The game features a clean interface, vibrant colors and fluid animations designed for clarity and immersion. This is a smart, fun and highly engaging puzzle experience. Peg Solitaire In addition to the Slide Puzzle, Einstein’s Riddle also includes Peg Solitaire, a timeless logic challenge. The objective is simple but difficult to master. Remove all pegs from the board until only one remains. Key characteristics include traditional rules, strategic moves that require planning and foresight, and gameplay that encourages concentration, patience and logical reasoning. Peg Solitaire offers a calm, elegant and deeply satisfying experience. Train your brain every day Logic puzzles are more than entertainment. They stimulate reasoning, memory and problem solving skills, helping keep the mind active, sharp and engaged over time. Whether you want to relax, challenge yourself or simply keep your brain active, Einstein’s Riddle is a reliable companion for anyone who enjoys thinking, learning and mental growth at any age. Train your mind. Enjoy the challenge. Discover how far your reasoning can go.

Screenshots

Eidetic Memory Championship4 screens
The Einstein`s Riddle3 screens

Verdict

The call

Eidetic Memory Championship and The Einstein`s Riddle both sit at 4.3 stars, but that hides the real split: 75% of Eidetic Memory Championship's written reviews are positive against 41% of The Einstein`s Riddle's. Eidetic Memory Championship also leads on update cadence (every 9 days vs every 3 weeks) and iOS requirement (7.0 vs 13.0). On price, rating, ratings volume and ads 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.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.3 for Eidetic Memory Championship against 4.3 for The Einstein`s Riddle. Both are backed by a comparable volume of ratings — 18 and 28 respectively. Written reviews are what separate them: 75% of Eidetic Memory Championship's written reviews are positive against 41% of The Einstein`s Riddle's.

UpkeepUpdate frequency

Eidetic Memory Championship ships an update every 9 days, The Einstein`s Riddle every 3 weeks. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

Scorecard3 real differences · 7 level
Eidetic Memory Championship versus The Einstein`s Riddle: the parameters behind the verdict, then further details
ParameterEidetic Memory ChampionshipThe Einstein`s Riddle
PriceFreeFree
Rating4.3 (18 ratings) — better4.3 (28 ratings)
Positive reviews75.0% of reviews — better41.2% of reviews
Number of ratings1828 — better
Update frequencyEvery 9 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS7.0 — better13.0
Further details — not scored
Size29 MB47 MB
Age rating4+12+
DeveloperHideyuki KawanoRodrigo Daboit

Customer experience

Eidetic Memory Championship

All ratings18 ratings
Positive83.3%
Neutral5.6%
Negative11.1%
Written reviews8 reviews
Positive75.0%
Neutral12.5%
Negative12.5%

The Einstein`s Riddle

All ratings28 ratings
Positive78.6%
Neutral7.1%
Negative14.3%
Written reviews17 reviews
Positive41.2%
Neutral5.9%
Negative52.9%

In-app purchases

None

Eidetic Memory Championship

No in-app purchases

None

The Einstein`s Riddle

No in-app purchases

Questions

Is Eidetic Memory Championship free?
Eidetic Memory Championship is free to download, with no in-app purchases.
Is The Einstein`s Riddle free?
The Einstein`s Riddle is free to download, with no in-app purchases.
Which has better reviews, Eidetic Memory Championship or The Einstein`s Riddle?
Eidetic Memory Championship is rated higher. Eidetic Memory Championship averages 4.3 out of 5 from 18 ratings, while The Einstein`s Riddle averages 4.3 from 28 ratings.
Do Eidetic Memory Championship or The Einstein`s Riddle have ads?
Neither Eidetic Memory Championship nor The Einstein`s Riddle shows ads.
Which is updated more often, Eidetic Memory Championship or The Einstein`s Riddle?
Eidetic Memory Championship ships an update every 9 days, and The Einstein`s Riddle every 3 weeks. Most recently, Eidetic Memory Championship was updated on November 2, 2026 and The Einstein`s Riddle on November 3, 2026.

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