# Hurdler vs N'Back Butterfly

The clearest difference is ads: Hurdler at none against N'Back Butterfly's shown. Hurdler also leads on monetization model (free vs ad-supported) and iOS requirement (12.0 vs 15.6). N'Back Butterfly's advantage is update cadence (every 10 months vs every 78 months) and review sentiment (100% vs 80%). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Hurdler ships an update every 78 months, N'Back Butterfly every 10 months. The most recent releases landed on October 23, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Hurdler | N'Back Butterfly |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/hurdler/id305496720/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 80.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 78 months | **Every 10 months** |
| Monetization | **Free** | Ad-supported |
| Size | 9 MB | 9 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Easy 8 Software](https://appshunter.io/developer/293405662) | [Yasuyoshi Ota](https://appshunter.io/developer/1500357652) |

## What reviewers say

### Hurdler

[App page](https://appshunter.io/ios/app/hurdler/id305496720)

Navigate challenging levels by timing precise jumps to clear obstacles and reach the goal. Utilize various jump types and power-ups to overcome hazards in this fast-paced platformer. Compete with friends on online leaderboards.

**Highlights:** Timed jump mechanics, Four distinct jump types, Obstacle avoidance, Springboard power-ups, Online high-score boards, 90 levels of action

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

**In-app purchases:** none


### N'Back Butterfly

[App page](https://appshunter.io/ios/app/nback-butterfly/id853507894)

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.

**Highlights:** Working memory improvement, N-back task training, Cognitive neuroscience assessment, Continuous performance task

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

**In-app purchases:** none


## Frequently asked questions

### Is Hurdler free?

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

### Is N'Back Butterfly free?

N'Back Butterfly is free to download, with no in-app purchases.

### Do Hurdler or N'Back Butterfly have ads?

N'Back Butterfly shows ads; Hurdler does not.

### Which is updated more often, Hurdler or N'Back Butterfly?

Hurdler ships an update every 78 months, and N'Back Butterfly every 10 months. Most recently, Hurdler was updated on October 23, 2026 and N'Back Butterfly on October 29, 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.*