# ひとりごと英語学習 vs ShadowMark

The clearest difference is in-app purchases: ShadowMark at none against ひとりごと英語学習's 2. ShadowMark also leads on iOS requirement (17.0 vs 26.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. ひとりごと英語学習 sells 2 in-app purchases, starting at $7.99 per month. ShadowMark asks for nothing beyond the download.

ひとりごと英語学習 ships an update every 2 weeks, ShadowMark every 8 days. Both last shipped on October 28, 2026.

## The numbers

| Metric | ひとりごと英語学習 | ShadowMark |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 8 days** |
| Size | 12 MB | 3 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jimpei Yamamoto](https://appshunter.io/developer/1510733955) | [RYUTA SHIMOGAUCHI](https://appshunter.io/developer/6775823754) |

## What reviewers say

### ひとりごと英語学習

[App page](https://appshunter.io/ios/app/echo/id6748248887)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Echo Premium (Monthly) | $7.99 | per month |
| Echo Premium (Yearly) | $79.99 | per year |


### ShadowMark

[App page](https://appshunter.io/ios/app/shadowmark/id6775823482)

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

**In-app purchases:** none


## Frequently asked questions

### Is ひとりごと英語学習 free?

ひとりごと英語学習 is free to download, with in-app purchases available.

### Is ShadowMark free?

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

### Do ひとりごと英語学習 or ShadowMark have ads?

Neither ひとりごと英語学習 nor ShadowMark shows ads.

### Which is updated more often, ひとりごと英語学習 or ShadowMark?

ひとりごと英語学習 ships an update every 2 weeks, and ShadowMark every 8 days. Most recently, ひとりごと英語学習 was updated on October 28, 2026 and ShadowMark on October 28, 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.*