# 超暗記 vs Study Penguin

The clearest difference is update cadence: Study Penguin at daily against 超暗記's every 3 months. Study Penguin also leads on iOS requirement (15.1 vs 17.0). On price, ads, 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.

超暗記 ships an update every 3 months, Study Penguin daily. The most recent releases landed on October 7, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | 超暗記 | Study Penguin |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Daily** |
| Size | 3 MB | 38 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Tsunehiro Takeuchi](https://appshunter.io/developer/1613720335) | [Rei Minamida](https://appshunter.io/developer/6779070914) |

## What reviewers say

### 超暗記

[App page](https://appshunter.io/ios/app/id6759853249)

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

**In-app purchases:** none


### Study Penguin

[App page](https://appshunter.io/ios/app/study-penguin/id6779070912)

**In-app purchases:** none


## Frequently asked questions

### Is 超暗記 free?

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

### Is Study Penguin free?

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

### Do 超暗記 or Study Penguin have ads?

Neither 超暗記 nor Study Penguin shows ads.

### Which is updated more often, 超暗記 or Study Penguin?

超暗記 ships an update every 3 months, and Study Penguin daily. Most recently, 超暗記 was updated on October 7, 2026 and Study Penguin on October 2, 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.*