# Eidetic Memory Championship vs The Einstein`s Riddle

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.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

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.

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.

## The numbers

| Metric | Eidetic Memory Championship | The Einstein`s Riddle |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (18 ratings)](https://appshunter.io/ios/app/eidetic-memory-championship/id1169060360/reviews)** | [4.3 (28 ratings)](https://appshunter.io/ios/app/the-einsteins-riddle/id1494038665/reviews) |
| Number of ratings | 18 | **28** |
| Positive reviews | **75.0% of reviews** | 41.2% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 3 weeks |
| Monetization | Free | Free |
| Size | 29 MB | 47 MB |
| Requires iOS | **7.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Hideyuki Kawano](https://appshunter.io/developer/1169060359) | [Rodrigo Daboit](https://appshunter.io/developer/1317514980) |

## What reviewers say

### Eidetic Memory Championship

[App page](https://appshunter.io/ios/app/eidetic-memory-championship/id1169060360)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### The Einstein`s Riddle

[App page](https://appshunter.io/ios/app/the-einsteins-riddle/id1494038665)

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:** macOS Compatibility

**In-app purchases:** none


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*