N'Back Butterfly vs Particle World
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
N'Back Butterfly
Enhance your cognitive abilities and combat forgetfulness with this application designed to improve working memory. It utilizes the scientifically recognized n-back task to train your brain's capacity for information recall and manipulation.
- Working memory improvement
- N-back task training
- Cognitive neuroscience assessment
- Continuous performance task
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Forget about forgetfulness! Improve your memory! Improve Working Memory using N'Back Butterfly. The n-back task is a continuous performance task that is commonly used as an assessment in cognitive neuroscience to measure a part of working memory. The n-back was introduced by Wayne Kirchner in 1958. [quoted from Wikipedia 2014-04-02]
Particle World
Navigate a challenging world by avoiding other particles. Utilize unique weapons like the Particle Gun and Gravity Field to survive and enhance your gameplay experience. This simple yet engaging game offers a fun way to test your reflexes.
- Particle avoidance gameplay
- Particle Gun weapon
- Gravity Field tool
- Challenging survival mechanics
- Simple, engaging controls
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Welcome to Particle World! The only rule here is to avoid other particles. Simple, but challenging! We provide you some weapons to help you survive the game. The Particle Gun can destroy other particles, and the Gravity Field can automatically drag particles away. Use them, It makes the game more fun! Contact us: sanqystudio@foxmail.com
Screenshots
Verdict
The clearest difference is in-app purchases: N'Back Butterfly at none against Particle World's 2. Particle World's advantage is ads (none vs shown) and iOS requirement (8.0 vs 15.6). On price, review sentiment, update cadence and device support 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
Both are free to download. Particle World sells 2 one-off in-app purchases. N'Back Butterfly asks for nothing beyond the download.
Both ship on a similar rhythm, roughly every 10 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.
| Parameter | N'Back Butterfly | Particle World |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 10 months | Every 10 months |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 8.0 — better |
| Further details — not scored | ||
| Size | 9 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | Yasuyoshi Ota | Foshan Youfou Technology Co., Ltd |
Customer experience
N'Back Butterfly
Particle World
In-app purchases
N'Back Butterfly
No in-app purchases
Particle World
- Particle Gun$0.99
- Anti-Gravity Field$0.99
