EYT Go/NoGo vs N'Back Fan
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
EYT Go/NoGo
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.
- Inhibition assessment game
- Tap fish, avoid sharks
- 5-minute assessment
- Score reporting
- Data export for research
- Multilingual support
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Early Years Toolbox (EYT) Go/No-Go is an iPad-based assessment of children's inhibition (i.e., ability to control behavioural impulses). In this game, fish and sharks swim across the screen and children are instructed to tap the screen whenever they see a Fish (‘catch the fish’) and refrain from tapping when a Shark appears (‘avoid the sharks’). This game takes approximately 5 minutes to complete. Scores are presented on the final assessment screen. For more precise research applications, there are options to have the item by item data sent to a user-specified e-mail address or database. For more information, training videos and analysis resources, please visit http://www.eytoolbox.com.au Languages embedded: English, Arabic, Afrikaans, Chinese (Simplified and Traditional), Danish, Dutch, Finnish, French, Indonesian, Japanese, Korean, Mandinka, Mongolian, Norwegian, Portuguese, Shangaan, Sotho, Spanish, Swedish, Xhosa, Zulu, and more in progress About the Early Years Toolbox: The 'Early Years Toolbox' (EYT, for short) is comprised of brief, engaging game-like assessments of children’s self-regulation, executive functioning and vocabulary. These assessments are based on well-established and widely used measures, yet have been adapted and optimised on the basis of 20+ years of research experience working with young children. NOTE FOR RESEARCHERS: If using this app for research and/or publication purposes, please cite the following as the original source article: Howard, S. J., & Melhuish, E. (2017). An Early Years Toolbox (EYT) for assessing early executive function, language, self-regulation, and social development: Validity, reliability and preliminary norms. Journal of Psychoeducational Assessment, 35(3), 255-275.
N'Back Fan
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Improve Sensory Memory & Working Memory using N'Back. Tap the number key matches the one from N steps earlier in the sequence. In 1'Back 1 task1: count & memorize 2 task2: count & memorize 3 __keyboard__: answer for task1 4 task3: count & memorize 5 __keyboard__: answer for task2 6 task4: count & memorize : In 2'Back 1 task1: count & memorize 2 task2: count & memorize 3 task3: count & memorize 4 __keyboard__: answer for task1 5 task4: count & memorize 6 __keyboard__: answer for task2 7 task5: count & memorize : [details] https://app.brain-workout.org/nbackfan-e/
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | EYT Go/NoGo | N'Back Fan |
|---|---|---|
| Price | $9.99 | Free — better |
| Rating | 4.5 (2 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 2 months — better | Every 9 months |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 15.6 | 15.6 |
| Further details — not scored | ||
| Size | 70 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | University of Wollongong | Yasuyoshi Ota |
In-app purchases
EYT Go/NoGo
No in-app purchases
N'Back Fan
- remove ads and extend to 12$1.99









