# 高校3年生で覚える英単語400 vs AI英検準２級 Pass

The clearest difference is in-app purchases: 高校3年生で覚える英単語400 at none against AI英検準２級 Pass's 2. 高校3年生で覚える英単語400 also leads on device support (3 vs 1) and iOS requirement (9.0 vs 17.0). AI英検準２級 Pass's advantage is ads (none vs shown) and update cadence (every 2 months vs every 7 months). On price there is nothing between them.

Both are free to download. AI英検準２級 Pass sells 2 in-app purchases, starting at $3.99 per month. 高校3年生で覚える英単語400 asks for nothing beyond the download.

高校3年生で覚える英単語400 ships an update every 7 months, AI英検準２級 Pass every 2 months. The most recent releases landed on October 10, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 高校3年生で覚える英単語400 | AI英検準２級 Pass |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/3400/id1470913121/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 7 months | **Every 2 months** |
| Monetization | Ad-supported | — |
| Size | 15 MB | 37 MB |
| Requires iOS | **9.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Junpei Shimotsu](https://appshunter.io/developer/882299124) | [Daiki Kobayashi](https://appshunter.io/developer/1891718176) |

## What reviewers say

### 高校3年生で覚える英単語400

[App page](https://appshunter.io/ios/app/3400/id1470913121)

This app helps high school seniors learn 400 English vocabulary words. It features pronunciation for listening practice and a medal system for mastering categories. The 4-choice question format allows for quick study sessions.

**Highlights:** 400 high school senior vocabulary words, Pronunciation feature for listening practice, 23 categorized vocabulary sets, Medal system for category mastery, 4-choice question format for quick study

**Features:** macOS Compatibility

**In-app purchases:** none


### AI英検準２級 Pass

[App page](https://appshunter.io/ios/app/ai-pass/id6762229086)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアム月額プラン | $3.99 | per month |
| プレミアム年額プラン | $34.99 | per year |


## Frequently asked questions

### Is 高校3年生で覚える英単語400 free?

高校3年生で覚える英単語400 is free to download, with no in-app purchases.

### Is AI英検準２級 Pass free?

AI英検準２級 Pass is free to download, with in-app purchases available.

### Do 高校3年生で覚える英単語400 or AI英検準２級 Pass have ads?

高校3年生で覚える英単語400 shows ads; AI英検準２級 Pass does not.

### Which is updated more often, 高校3年生で覚える英単語400 or AI英検準２級 Pass?

高校3年生で覚える英単語400 ships an update every 7 months, and AI英検準２級 Pass every 2 months. Most recently, 高校3年生で覚える英単語400 was updated on October 10, 2026 and AI英検準２級 Pass on October 25, 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.*