# おてつだいスタンプ vs PixelSpeech

The clearest difference is in-app purchases: PixelSpeech at none against おてつだいスタンプ's 1. おてつだいスタンプ's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. おてつだいスタンプ sells 1 one-off in-app purchase. PixelSpeech asks for nothing beyond the download.

おてつだいスタンプ ships an update every 2 days, PixelSpeech daily. The most recent releases landed on October 24, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | おてつだいスタンプ | PixelSpeech |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (1 ratings)](https://appshunter.io/ios/app/pixelspeech-learn-korean/id6768567034/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 2 days | **Daily** |
| Monetization | — | Ad-supported |
| Size | 110 MB | 39 MB |
| Requires iOS | 16.4 | **15.6** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [RUOK LLC](https://appshunter.io/developer/1867680933) | [JAEMIN SHIN](https://appshunter.io/developer/1896586101) |

## What reviewers say

### おてつだいスタンプ

[App page](https://appshunter.io/ios/app/id6759640151)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Pack | $0.49 | one-time |


### PixelSpeech

[App page](https://appshunter.io/ios/app/pixelspeech-learn-korean/id6768567034)

This app uses AI to analyze your Korean pronunciation at the phoneme level, providing real-time feedback and personalized practice. It offers structured courses, daily challenges, and mini-games to help you master Korean sounds and improve fluency.

**Highlights:** AI phoneme-level pronunciation analysis, 5-day pronunciation course, Daily speaking challenges, AI pattern diagnosis for weak sounds, Structured learning of vowels and consonants, Precise pronunciation scoring, 5 pronunciation mini-games, 8 levels of progress tracking

**In-app purchases:** none


## Frequently asked questions

### Is おてつだいスタンプ free?

おてつだいスタンプ is free to download, with in-app purchases available.

### Is PixelSpeech free?

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

### Do おてつだいスタンプ or PixelSpeech have ads?

PixelSpeech shows ads; おてつだいスタンプ does not.

### Which is updated more often, おてつだいスタンプ or PixelSpeech?

おてつだいスタンプ ships an update every 2 days, and PixelSpeech daily. Most recently, おてつだいスタンプ was updated on October 24, 2026 and PixelSpeech 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.*