# EYT Card Sorting vs Obradovic Lab AMES

The clearest difference is price: Obradovic Lab AMES at Free against EYT Card Sorting's $9.99. Obradovic Lab AMES also leads on iOS requirement (11.0 vs 15.6). On rating, ratings volume, update cadence and ads there is nothing between them.

Obradovic Lab AMES 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.

On the App Store both sit at effectively the same score — 5.0 for EYT Card Sorting against 5.0 for Obradovic Lab AMES. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

EYT Card Sorting ships an update every 3 months, Obradovic Lab AMES every 5 months. The most recent releases landed on October 3, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | EYT Card Sorting | Obradovic Lab AMES |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/eyt-card-sorting/id918911275/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/obradovic-lab-ames/id1347960558/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 5 months |
| Monetization | Paid | **Free** |
| Size | 95 MB | 32 MB |
| Requires iOS | 15.6 | **11.0** |
| Devices | iPad | iPad |
| Age rating | 4+ | 4+ |
| Developer | [University of Wollongong](https://appshunter.io/developer/527113169) | [Stanford University](https://appshunter.io/developer/292922032) |

## 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


### Obradovic Lab AMES

[App page](https://appshunter.io/ios/app/obradovic-lab-ames/id1347960558)

This iPad application is designed for researchers to assess executive functions and delay of gratification in children. It features three distinct tasks and has been validated with children aged 4-12 across multiple countries.

**Highlights:** Executive function assessment, Delay of gratification tasks, Child-focused research tool, Validated with ages 4-12, Cross-cultural testing

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is EYT Card Sorting free?

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

### Is Obradovic Lab AMES free?

Obradovic Lab AMES is free to download, with no in-app purchases.

### Which has better reviews, EYT Card Sorting or Obradovic Lab AMES?

EYT Card Sorting and Obradovic Lab AMES are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do EYT Card Sorting or Obradovic Lab AMES have ads?

Neither EYT Card Sorting nor Obradovic Lab AMES shows ads.

### Which is updated more often, EYT Card Sorting or Obradovic Lab AMES?

EYT Card Sorting ships an update every 3 months, and Obradovic Lab AMES every 5 months. Most recently, EYT Card Sorting was updated on October 3, 2026 and Obradovic Lab AMES on October 7, 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.*