# EYT Card Sorting vs 2121 Game

The clearest difference is price: 2121 Game at Free against EYT Card Sorting's $9.99. 2121 Game also leads on device support (3 vs 1) and iOS requirement (13.0 vs 15.6). On update cadence, ads and in-app purchases there is nothing between them.

2121 Game is free to download; EYT Card Sorting costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

EYT Card Sorting ships an update every 3 months, 2121 Game every 4 months. The most recent releases landed on October 3, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | EYT Card Sorting | 2121 Game |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/eyt-card-sorting/id918911275/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 4 months |
| Monetization | Paid | — |
| Size | 95 MB | 451 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [University of Wollongong](https://appshunter.io/developer/527113169) | [BeeLabs Ltd](https://appshunter.io/developer/603539026) |

## What reviewers say

### EYT Card Sorting

[App page](https://appshunter.io/ios/app/eyt-card-sorting/id918911275)

This iPad-based game assesses children's cognitive flexibility by having them sort objects based on changing rules. It's designed for quick, engaging evaluations of executive functioning in young children. Data can be emailed for research purposes.

**Highlights:** Cognitive flexibility assessment, Rule-based object sorting, Executive functioning evaluation, Data export via email, Multilingual support, Research-based design

**In-app purchases:** none


### 2121 Game

[App page](https://appshunter.io/ios/app/2121-game/id6474293851)

**In-app purchases:** none


## Frequently asked questions

### Is EYT Card Sorting free?

EYT Card Sorting costs $9.99, with no in-app purchases.

### Is 2121 Game free?

2121 Game is free to download, with no in-app purchases.

### Do EYT Card Sorting or 2121 Game have ads?

Neither EYT Card Sorting nor 2121 Game shows ads.

### Which is updated more often, EYT Card Sorting or 2121 Game?

EYT Card Sorting ships an update every 3 months, and 2121 Game every 4 months. Most recently, EYT Card Sorting was updated on October 3, 2026 and 2121 Game on October 9, 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.*