# 海外では通じないカタカナ英語 vs PenFlow

The clearest difference is iOS requirement: 海外では通じないカタカナ英語 at 15.5 against PenFlow's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

海外では通じないカタカナ英語 ships an update every 2 weeks, PenFlow every 10 days. The most recent releases landed on October 12, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | 海外では通じないカタカナ英語 | PenFlow |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 10 days** |
| Size | 5 MB | 5 MB |
| Requires iOS | **15.5** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Yoshihide Machino](https://appshunter.io/developer/1630249073) | [SANWA Inc.](https://appshunter.io/developer/1878028373) |

## What reviewers say

### 海外では通じないカタカナ英語

[App page](https://appshunter.io/ios/app/id1630249071)

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

**In-app purchases:** none


### PenFlow

[App page](https://appshunter.io/ios/app/penflow/id6761091973)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 海外では通じないカタカナ英語 free?

海外では通じないカタカナ英語 is free to download, with no in-app purchases.

### Is PenFlow free?

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

### Do 海外では通じないカタカナ英語 or PenFlow have ads?

Neither 海外では通じないカタカナ英語 nor PenFlow shows ads.

### Which is updated more often, 海外では通じないカタカナ英語 or PenFlow?

海外では通じないカタカナ英語 ships an update every 2 weeks, and PenFlow every 10 days. Most recently, 海外では通じないカタカナ英語 was updated on October 12, 2026 and PenFlow on October 7, 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.*