# はい！アウト！ vs 1/2 one

The clearest difference is ads: はい！アウト！ at none against 1/2 one's shown. はい！アウト！ also leads on update cadence (weekly vs every 2 months) and iOS requirement (11.0 vs 16.4). On price, in-app purchases and device support there is nothing between them.

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

はい！アウト！ ships an update weekly, 1/2 one every 2 months. Both last shipped on October 2, 2026.

## The numbers

| Metric | はい！アウト！ | 1/2 one |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Weekly** | Every 2 months |
| Monetization | — | Ad-supported |
| Size | 89 MB | 49 MB |
| Requires iOS | **11.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [calect Inc.](https://appshunter.io/developer/1561290494) | [gravass, Inc.](https://appshunter.io/developer/1527714391) |

## What reviewers say

### はい！アウト！

[App page](https://appshunter.io/ios/app/id1663998229)

**Features:** macOS Compatibility

**In-app purchases:** none


### 1/2 one

[App page](https://appshunter.io/ios/app/12-one-half/id6526470967)

Test your luck and strategy in this simple guessing game. Aim for consecutive correct answers with a 50/50 chance, and track your progress. You get one chance to redo a selection per streak.

**Highlights:** 50/50 guessing mechanic, Consecutive correct answer tracking, Single redo per streak, Probability display, Simple L/R choices

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

**In-app purchases:** none


## Frequently asked questions

### Is はい！アウト！ free?

はい！アウト！ is free to download, with no in-app purchases.

### Is 1/2 one free?

1/2 one is free to download, with no in-app purchases.

### Do はい！アウト！ or 1/2 one have ads?

1/2 one shows ads; はい！アウト！ does not.

### Which is updated more often, はい！アウト！ or 1/2 one?

はい！アウト！ ships an update weekly, and 1/2 one every 2 months. Most recently, はい！アウト！ was updated on October 2, 2026 and 1/2 one on October 2, 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.*