# EYT Go/NoGo vs N'Back Fan

The clearest difference is price: N'Back Fan at Free against EYT Go/NoGo's $9.99. N'Back Fan also leads on device support (3 vs 1). EYT Go/NoGo's advantage is in-app purchases (none vs 1) and ads (none vs shown). On iOS requirement there is nothing between them.

N'Back Fan is free to download; EYT Go/NoGo costs $9.99 up front. N'Back Fan sells 1 one-off in-app purchase. EYT Go/NoGo asks for nothing beyond the download.

EYT Go/NoGo ships an update every 2 months, N'Back Fan every 9 months. The most recent releases landed on November 1, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | EYT Go/NoGo | N'Back Fan |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/eyt-gonogo/id919065618/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 months** | Every 9 months |
| Monetization | Paid | — |
| Size | 70 MB | 7 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [University of Wollongong](https://appshunter.io/developer/527113169) | [Yasuyoshi Ota](https://appshunter.io/developer/1500357652) |

## What reviewers say

### EYT Go/NoGo

[App page](https://appshunter.io/ios/app/eyt-gonogo/id919065618)

This iPad-based game assesses children's impulse control through a simple fish-catching and shark-avoiding mechanic. It takes about 5 minutes to complete and provides scores, with options to export detailed data for research. It's part of a larger toolbox of early childhood assessments.

**Highlights:** Inhibition assessment game, Tap fish, avoid sharks, 5-minute assessment, Score reporting, Data export for research, Multilingual support

**In-app purchases:** none


### N'Back Fan

[App page](https://appshunter.io/ios/app/nback-fan/id6449070102)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| remove ads and extend to 12 | $1.99 | one-time |


## Frequently asked questions

### Is EYT Go/NoGo free?

EYT Go/NoGo costs $9.99, with no in-app purchases.

### Is N'Back Fan free?

N'Back Fan is free to download, with in-app purchases available.

### Do EYT Go/NoGo or N'Back Fan have ads?

N'Back Fan shows ads; EYT Go/NoGo does not.

### Which is updated more often, EYT Go/NoGo or N'Back Fan?

EYT Go/NoGo ships an update every 2 months, and N'Back Fan every 9 months. Most recently, EYT Go/NoGo was updated on November 1, 2026 and N'Back Fan on October 27, 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.*