# Sci vs Eidetic Memory Championship

The clearest difference is rating: Sci at 5.0 against Eidetic Memory Championship's 4.3. Eidetic Memory Championship's advantage is in-app purchases (none vs 5) and ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Sci sells 5 one-off in-app purchases. Eidetic Memory Championship asks for nothing beyond the download.

Sci holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Eidetic Memory Championship has 18 ratings behind it against 1, so its average is the more settled of the two.

Sci ships an update every 26 months, Eidetic Memory Championship every 9 days. The most recent releases landed on October 5, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Sci | Eidetic Memory Championship |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sci-fi-puzzles/id581907856/reviews)** | [4.3 (18 ratings)](https://appshunter.io/ios/app/eidetic-memory-championship/id1169060360/reviews) |
| Number of ratings | 1 | **18** |
| Positive reviews | — | 75.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 26 months | **Every 9 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 149 MB | 29 MB |
| Requires iOS | 13.0 | **7.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [John Smith](https://appshunter.io/developer/483881207) | [Hideyuki Kawano](https://appshunter.io/developer/1169060359) |

## What reviewers say

### Sci

[App page](https://appshunter.io/ios/app/sci-fi-puzzles/id581907856)

This jigsaw puzzle game offers 60 levels of high-quality sci-fi images. Drag and drop pieces to complete pictures, with options to peek at the original, skip difficult levels, and save completed images. Compete with players worldwide via Game Center.

**Highlights:** 60 sci-fi themed levels, Drag and drop puzzle mechanics, Peek at original image, Skip difficult levels, Save completed images, Game Center integration

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Peek image | $0.99 | one-time |
| Save image | $0.99 | one-time |
| Skip level | $0.99 | one-time |
| Unlock all levels | $1.99 | one-time |
| Remove ads | $1.99 | one-time |


### 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


## Frequently asked questions

### Is Sci free?

Sci is free to download, with in-app purchases available.

### Is Eidetic Memory Championship free?

Eidetic Memory Championship is free to download, with no in-app purchases.

### Which has better reviews, Sci or Eidetic Memory Championship?

Sci is rated higher. Sci averages 5.0 out of 5 from 1 ratings, while Eidetic Memory Championship averages 4.3 from 18 ratings.

### Do Sci or Eidetic Memory Championship have ads?

Sci shows ads; Eidetic Memory Championship does not.

### Which is updated more often, Sci or Eidetic Memory Championship?

Sci ships an update every 26 months, and Eidetic Memory Championship every 9 days. Most recently, Sci was updated on October 5, 2026 and Eidetic Memory Championship on September 20, 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.*