# Human Factor vs Memori英単語

The clearest difference is in-app purchases: Human Factor at none against Memori英単語's 6. Memori英単語's advantage is device support and iOS requirement (16.4 vs 26.2). On price there is nothing between them.

Both are free to download. Memori英単語 sells 6 in-app purchases, starting at $5.99 per month. Human Factor asks for nothing beyond the download.

## The numbers

| Metric | Human Factor | Memori英単語 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | — | Yes |
| Update frequency | — | Every 8 days |
| Size | 1.9 GB | 35 MB |
| Requires iOS | 26.2 | **16.4** |
| Devices | — | **iPhone, iPad** |
| Age rating | 17+ | 12+ |
| Developer | [Masahiko Hattori](https://appshunter.io/developer/1870060089) | [VIA VICO, K.K.](https://appshunter.io/developer/1893931814) |

## What reviewers say

### Human Factor

[App page](https://appshunter.io/ios/app/human-factor/id6759567429)

**In-app purchases:** none


### Memori英単語

[App page](https://appshunter.io/ios/app/memori/id6762361173)

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Memori Premium | $5.99 | per month |
| Memori Ticket x10 | $0.99 | one-time |
| Memori Ticket x50 | $3.99 | one-time |
| Memori Ticket x100 | $6.99 | one-time |
| Memori Ticket x250 | $17.99 | one-time |
| Memori Ticket x500 | $29.99 | one-time |


## Frequently asked questions

### Is Human Factor free?

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

### Is Memori英単語 free?

Memori英単語 is free to download, with in-app purchases available.

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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.*