# 1/2 one-half — Keep guessing one-half.

> Guess 'L' or 'R' repeatedly with 50/50 odds for consecutive correct answers. (iPhone/iPad app by GRAVASS, INC..)

- Source: https://appshunter.io/ios/app/12-one-half/id6526470967 (this page in markdown: same URL + `.md`)
- Developer: [GRAVASS, INC.](https://appshunter.io/developer/1527714391)
- Category: Games, Casual, Simulation
- Price: Free
- Age rating: 9+
- Requires: iOS 14.0 · 63 MB
- Languages: English, Japanese
- Released: 2024-07-11
- Data updated: 2026-06-01
- Monetization: ad-supported
- User reviews in markdown: https://appshunter.io/ios/app/12-one-half/id6526470967/reviews.md

## What is 1/2 one?

This is a game where you challenge yourself to see how many times in a row you can guess the correct answer with a probability of 1/2.

Please choose one from the two options "L" and "R".
If you answer correctly, the probability of consecutive correct answers at that point will be displayed.
You can redo your selection only once during a series of correct answers.
*If you try again, the correct answer choices will be drawn again.

We plan to continue updating and adding features in the future.

## Key features

- 50/50 guessing mechanic
- Consecutive correct answer tracking
- Single redo per streak
- Probability display
- Simple L/R choices

## Recent user reviews (4 of 4)

All indexed reviews: https://appshunter.io/ios/app/12-one-half/id6526470967/reviews.md

### 5/5 — 面白い

*2025-07-15, version 1.0.2*

最高は256分の1までしか行ったことがないけど自分の運を試したくなって面白い。広告をなくす課金とかも追加して欲しいです！

### 5/5 — 最高ー

*2025-06-20, version 1.0.2*

気持ちい〜

### 1/5 — 広告が多すぎる

*2025-06-20, version 1.0.2*

やり直す時に広告が出るのはいいのですが（自分でボタン押してるので）、途中で広告が突然流れてくる（しかも頻度が高い）のでストレスです。

### 1/5 — まぁまぁやな

*2024-09-05, version 1.0.1*

いちいちやり直し報告つくのがめんどくさい。広告が少ないのは良いことだがやり直し報告がやはりめんどくさい。もくだよ

## Frequently asked questions about 1/2 one

### What is the main goal of 1/2 one-half?

The main goal is to see how many times in a row you can correctly guess the answer, which has a probability of 1/2. The game displays your consecutive correct answer probability as you play.

### Can I redo a wrong guess in 1/2 one-half?

You can redo your selection only once during a series of correct answers. If you choose to redo, the correct answer choices will be redrawn.

### Does 1/2 one-half have ads?

Yes, 1/2 one-half contains advertisements. It is a free-to-play game supported by ads.

### What devices is 1/2 one-half available on?

1/2 one-half is available on iPhone, iPad, and iPod. It is designed for iOS devices.

### What is the age rating for 1/2 one-half?

The age rating for 1/2 one-half is 9+. This indicates it is suitable for players aged 9 and older.

### How often is 1/2 one-half updated?

The latest version, 1.0.2, was released on October 8, 2024. The developer plans to continue updating and adding features in the future.

### Can I play 1/2 one-half offline?

The provided information does not specify offline play capabilities. However, as it is an ad-supported game, an internet connection may be required for ad delivery.

## Version history (last 3 releases)

### 1.0.2 — 2024-10-08

Improved the ability to set redo ON/OFF.

### 1.0.1 — 2024-08-08

Fixed minor bugs.

### 1.0 — 2024-07-11

No release notes.

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## More apps by GRAVASS, INC.

- [Programming de Drive](https://appshunter.io/ios/app/programming-de-drive/id1527714389)
- [THE BLOCK PUZZLE - POLYOMINO](https://appshunter.io/ios/app/the-block-puzzle-polyomino/id6445902263)

All apps by GRAVASS, INC.: https://appshunter.io/developer/1527714391

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-01.*