# WordMasking vs Study Penguin

The clearest difference is price: Study Penguin at Free against WordMasking's $2.99. Study Penguin also leads on update cadence (daily vs monthly). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Study Penguin is free to download; WordMasking costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

WordMasking ships an update monthly, Study Penguin daily. The most recent releases landed on October 14, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | WordMasking | Study Penguin |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[4.6 (17 ratings)](https://appshunter.io/ios/app/wordmasking/id468580673/reviews)** | — |
| Number of ratings | **17** | — |
| Positive reviews | 76.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Daily** |
| Monetization | Paid | — |
| Size | 7 MB | 38 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Akira Takahashi](https://appshunter.io/developer/391327047) | [Rei Minamida](https://appshunter.io/developer/6779070914) |

## What reviewers say

### WordMasking

[App page](https://appshunter.io/ios/app/wordmasking/id468580673)

This tool helps users memorize words and sentences by masking content with drawing lines. It supports various file types, offers customizable answer insertion, and tracks progress. Users can also write directly on pages and manage their study materials.

**Highlights:** Masking words/sentences with drawing lines, Supports image, PDF, and text files, Customizable answer insertion (definition, translation), Progress tracking with color-coded feedback, One-handed operation for marking, Batch masking and search functionality, Finger/pencil writing on pages (iPad)

**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 WordMasking free?

WordMasking costs $2.99, with no in-app purchases.

### Is Study Penguin free?

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

### Do WordMasking or Study Penguin have ads?

Neither WordMasking nor Study Penguin shows ads.

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

WordMasking ships an update monthly, and Study Penguin daily. Most recently, WordMasking was updated on October 14, 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.*