# 生活なあに？ vs Challenge with Erin

The clearest difference is ads: Challenge with Erin at none against 生活なあに？'s shown. Challenge with Erin also leads on update cadence (every 5 months vs every 20 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

生活なあに？ ships an update every 20 months, Challenge with Erin every 5 months. The most recent releases landed on October 26, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | 生活なあに？ | Challenge with Erin |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (16 ratings)](https://appshunter.io/ios/app/challenge-with-erin/id1290748939/reviews)** |
| Number of ratings | — | **16** |
| Positive reviews | — | 62.5% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 20 months | **Every 5 months** |
| Monetization | — | Free |
| Size | 90 MB | 290 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Pixel Co., Ltd.](https://appshunter.io/developer/1743924614) | [The Japan Foundation Japanese-Language Institute, Kansai](https://appshunter.io/developer/1023654861) |

## What reviewers say

### 生活なあに？

[App page](https://appshunter.io/ios/app/id1017416883)

**In-app purchases:** none


### Challenge with Erin

[App page](https://appshunter.io/ios/app/challenge-with-erin/id1290748939)

This app offers interactive lessons and quizzes to help users learn Japanese vocabulary, grammar, and culture. It features engaging games, manga-based dialogues, and cultural trivia to make studying enjoyable and effective. Track your progress, earn certificates, and compete with others on leaderboards.

**Highlights:** Interactive vocabulary games, Manga-based dialogue practice, Japanese culture quizzes, Progress tracking and points system, Weekly tests with certificates, Mini dictionary with Romanization

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is 生活なあに？ free?

生活なあに？ is free to download, with no in-app purchases.

### Is Challenge with Erin free?

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

### Do 生活なあに？ or Challenge with Erin have ads?

生活なあに？ shows ads; Challenge with Erin does not.

### Which is updated more often, 生活なあに？ or Challenge with Erin?

生活なあに？ ships an update every 20 months, and Challenge with Erin every 5 months. Most recently, 生活なあに？ was updated on October 26, 2026 and Challenge with Erin on October 20, 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.*