# 【勝木式英語講座受講生専用】TOEFLアプリ vs Prepclass

The clearest difference is in-app purchases: 【勝木式英語講座受講生専用】TOEFLアプリ at none against Prepclass's 2. Prepclass's advantage is update cadence (every 3 months vs every 40 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Prepclass sells 2 in-app purchases, starting at $14.99 per month. 【勝木式英語講座受講生専用】TOEFLアプリ asks for nothing beyond the download.

【勝木式英語講座受講生専用】TOEFLアプリ ships an update every 40 months, Prepclass every 3 months. The most recent releases landed on November 12, 2026 and November 11, 2026 respectively.

## The numbers

| Metric | 【勝木式英語講座受講生専用】TOEFLアプリ | Prepclass |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 40 months | **Every 3 months** |
| Size | 46 MB | 61 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [PRINCIPLE EDUCATION, K.K.](https://appshunter.io/developer/1501990518) | [Okiro Education, Inc.](https://appshunter.io/developer/1883825560) |

## What reviewers say

### 【勝木式英語講座受講生専用】TOEFLアプリ

[App page](https://appshunter.io/ios/app/toefl/id6444052585)

**Features:** macOS Compatibility

**In-app purchases:** none


### Prepclass

[App page](https://appshunter.io/ios/app/prepclass-toefl-prep-2026/id6760318069)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Prepclass Pro Monthly | $14.99 | per month |
| Prepclass Pro Annual | $59.99 | per year |


## Frequently asked questions

### Is 【勝木式英語講座受講生専用】TOEFLアプリ free?

【勝木式英語講座受講生専用】TOEFLアプリ is free to download, with no in-app purchases.

### Is Prepclass free?

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

### Do 【勝木式英語講座受講生専用】TOEFLアプリ or Prepclass have ads?

Neither 【勝木式英語講座受講生専用】TOEFLアプリ nor Prepclass shows ads.

### Which is updated more often, 【勝木式英語講座受講生専用】TOEFLアプリ or Prepclass?

【勝木式英語講座受講生専用】TOEFLアプリ ships an update every 40 months, and Prepclass every 3 months. Most recently, 【勝木式英語講座受講生専用】TOEFLアプリ was updated on November 12, 2026 and Prepclass on November 11, 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.*