# Card2Memory vs Study Penguin

The clearest difference is in-app purchases: Study Penguin at none against Card2Memory's 3. Study Penguin also leads on update cadence (daily vs fortnightly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Card2Memory sells 3 one-off in-app purchases. Study Penguin asks for nothing beyond the download.

Card2Memory ships an update fortnightly, Study Penguin daily. The most recent releases landed on November 1, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Card2Memory | Study Penguin |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (3 ratings)](https://appshunter.io/ios/app/card2memory/id1003066716/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 57.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 1 MB | 38 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Karl-Heinz Loch](https://appshunter.io/developer/909594001) | [Rei Minamida](https://appshunter.io/developer/6779070914) |

## What reviewers say

### Card2Memory

[App page](https://appshunter.io/ios/app/card2memory/id1003066716)

This flashcard tool utilizes the Leitner system to optimize learning. Create cards with text, audio, images, or even PDF content. It supports automatic card creation from vocabulary lists and import options for CSV and C2M files.

**Highlights:** Leitner system with 5 boxes, Text, audio, image, and PDF card content, Automatic card creation from vocabulary lists, CSV and C2M file import, Reverse learning option, Save and retrieve flashcard states

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 10 additional flashcards | $0.99 | one-time |
| any numer of flashcards from 11 | $1.99 | one-time |
| any number of flashcards | $2.99 | one-time |


### Study Penguin

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

**In-app purchases:** none


## Frequently asked questions

### Is Card2Memory free?

Card2Memory is free to download, with in-app purchases available.

### Is Study Penguin free?

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

### Do Card2Memory or Study Penguin have ads?

Neither Card2Memory nor Study Penguin shows ads.

### Which is updated more often, Card2Memory or Study Penguin?

Card2Memory ships an update fortnightly, and Study Penguin daily. Most recently, Card2Memory was updated on November 1, 2026 and Study Penguin on November 10, 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.*