# N'Back Butterfly vs myspider.io

The clearest difference is in-app purchases: N'Back Butterfly at none against myspider.io's 1. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. myspider.io sells 1 one-off in-app purchase. N'Back Butterfly asks for nothing beyond the download.

## The numbers

| Metric | N'Back Butterfly | myspider.io |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/myspiderio/id6705125968/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 10 months | — |
| Monetization | Ad-supported | — |
| Size | 9 MB | 130 MB |
| Requires iOS | 15.6 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Yasuyoshi Ota](https://appshunter.io/developer/1500357652) | [Navjot Singh](https://appshunter.io/developer/1718154422) |

## What reviewers say

### 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


### myspider.io

[App page](https://appshunter.io/ios/app/myspiderio/id6705125968)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy Game  Remove Ads | $4.99 | one-time |


## Frequently asked questions

### Is N'Back Butterfly free?

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

### Is myspider.io free?

myspider.io is free to download, with in-app purchases available.

### Do N'Back Butterfly or myspider.io have ads?

Both N'Back Butterfly and myspider.io show ads.

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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.*