# 赤シート英単語アプリ/英単語/英文法/英熟語 vs Pendy（ペンディ）

The clearest difference is in-app purchases: Pendy（ペンディ） at none against 赤シート英単語アプリ/英単語/英文法/英熟語's 3. Pendy（ペンディ） also leads on update cadence (every 2 days vs fortnightly). 赤シート英単語アプリ/英単語/英文法/英熟語's advantage is iOS requirement (16.0 vs 18.2). On price, review sentiment, ads and monetization model there is nothing between them.

Both are free to download. 赤シート英単語アプリ/英単語/英文法/英熟語 sells 3 in-app purchases, starting at $17.99 per month. Pendy（ペンディ） asks for nothing beyond the download.

赤シート英単語アプリ/英単語/英文法/英熟語 ships an update fortnightly, Pendy（ペンディ） every 2 days. Both last shipped on October 31, 2026.

## The numbers

| Metric | 赤シート英単語アプリ/英単語/英文法/英熟語 | Pendy（ペンディ） |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 days** |
| Monetization | Freemium | Freemium |
| Size | 9 MB | 73 MB |
| Requires iOS | **16.0** | 18.2 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Kazuki Kusafuka](https://appshunter.io/developer/1896678535) | [Ryusei Okamoto](https://appshunter.io/developer/1775109038) |

## What reviewers say

### 赤シート英単語アプリ/英単語/英文法/英熟語

[App page](https://appshunter.io/ios/app/id6769674680)

Learn English vocabulary, idioms, and grammar efficiently with a red sheet-style memorization mode. Choose courses for TOEIC, Eiken, exams, or daily conversation. Features include quizzes, custom word lists, and learning progress management.

**Highlights:** English vocabulary, idiom, and grammar learning, Red sheet-style memorization mode, Quiz-based learning, Custom word list creation, Learning progress tracking, Create word lists from photos

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月額プレミアムプラン | $17.99 | per month |
| 3か月プレミアムプラン | $39.99 | per 3 months |
| 年額プレミアムプラン | $119.99 | per year |


### Pendy（ペンディ）

[App page](https://appshunter.io/ios/app/pendy/id6808060200)

This AI-powered learning app transforms lecture recordings, PDFs, and videos into organized notes. It automatically generates flashcards and quizzes, and allows users to ask questions directly about their notes. Users can also connect with a university community to share and import notes.

**Highlights:** AI-generated notes from lectures, Automatic flashcard and quiz creation, AI chat for note-based questions, University community for note sharing, Continuous learning streak tracking, Background note generation

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

**In-app purchases:** none


## Frequently asked questions

### Is 赤シート英単語アプリ/英単語/英文法/英熟語 free?

赤シート英単語アプリ/英単語/英文法/英熟語 is free to download, with in-app purchases available.

### Is Pendy（ペンディ） free?

Pendy（ペンディ） is free to download, with no in-app purchases.

### Do 赤シート英単語アプリ/英単語/英文法/英熟語 or Pendy（ペンディ） have ads?

Neither 赤シート英単語アプリ/英単語/英文法/英熟語 nor Pendy（ペンディ） shows ads.

### Which is updated more often, 赤シート英単語アプリ/英単語/英文法/英熟語 or Pendy（ペンディ）?

赤シート英単語アプリ/英単語/英文法/英熟語 ships an update fortnightly, and Pendy（ペンディ） every 2 days. Most recently, 赤シート英単語アプリ/英単語/英文法/英熟語 was updated on October 31, 2026 and Pendy（ペンディ） on October 31, 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.*