# Which one do you prefer?

> Decision-making tool using paired comparison to rank multiple items. (iPhone/iPad app by Junichiro Seyama.)

- Source: https://appshunter.io/ios/app/which-one-do-you-prefer/id555872494 (this page in markdown: same URL + `.md`)
- Developer: [Junichiro Seyama](https://appshunter.io/developer/537815782)
- Category: Utilities, Lifestyle
- Price: Free
- Rating: 4.00/5 from 5 App Store ratings · 6 written reviews indexed
- Age rating: 4+
- Requires: iOS 8.1 · 5 MB
- Languages: American English, Japanese
- Released: 2012-09-18
- Data updated: 2026-08-19
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/which-one-do-you-prefer/id555872494/reviews.md

## What is Which one do you prefer??

'Which one do you prefer?' is a tool for decision making.

Imagine that we are thinking of going out to eat tonight. But where should we go? 
1) Italian, 2) Sushi bar, 3) Curry restaurant, or 4) actually, eat at home (Who will cook?).

Imagine also that we decided to adopt three cats, but there are eight candidate cats. Which three cats should we adopt?

You may have experienced difficulty in comparing multiple things and ranking them in order of your subjective preference. Eeny, meeny, miny, moe is one possible way to cope with such difficulty, but psychologists have utilized a method called the 'paired comparison' in their psychological studies. 

The paired comparison method is a procedure to break down a simultaneous comparison of multiple candidates into multiple comparisons of paired candidates. Obviously, comparing only two candidates is easier than comparing all candidates at once. But one drawback in this method is that we have to compare all possible paired combinations of candidates in a round robin fashion. More candidates result in more paired comparisons. For example, we have to compare 28 pairs to reveal our subjective ranking of eight cats.

This App reveals your subjective rankings of any kind of candidate items based on a paired comparison method. You can record a name, features, and a photo for each item and compare them systematically.

## Key features

- Paired comparison method
- Systematic ranking of items
- Record item names, features, and photos
- Decision making for multiple choices
- Subjective preference analysis

## Recent user reviews (6 of 6)

All indexed reviews: https://appshunter.io/ios/app/which-one-do-you-prefer/id555872494/reviews.md

### 5/5 — Great decision making app

*2022-03-06*

Have recommended it to most of my friends and family

### 5/5 — Finally !

*2020-08-11*

A simple to use pair compare tool !
Easy to use with a simple interface.  Thank you for creating this App.

### 5/5 — Fantastic little tool

*2019-07-22*

We were desperate for a simple pairwise comparison tool, and this is perfect! Easy to use; I did not have the issue the other reviewer did with crashing, even after entering 16 items with memos. My one request would be a simple way to export results. Great work!

### 1/5 — Used to be great

*2017-04-12*

I used to love this app, but now it crashes while entering items, and any items edited are not saved, so now it's useless. I tried deleting it and reinstalling, but the error persists. I tried going to the company's website, but there's no support in English. Would love to use this again if it is repaired.

### 4/5 — Please update

*2015-11-26*

This is the only paired comparisons app that I know of - for which much thanks - but it desperately needs a cosmetic and technological makeover for current iPhones.

### 5/5 — ランキングをつけやすい！おすすめです！

*2015-07-04*

選択肢も何個でもいいし、正確なランキングや、どれにしようか迷った時に便利です。決める時は2択で決めるので簡単に決めることができます。これは、ランダムに適当に決まるわけではないのでそういうのがいい方はぜひ使ってみて下さい！

## Frequently asked questions about Which one do you prefer?

### What is the paired comparison method used by Which one do you prefer?

The paired comparison method breaks down comparing multiple items into comparing just two at a time. This app uses this psychological technique to help you systematically rank your preferences for any set of candidates.

### Can I add details to the items I'm comparing in Which one do you prefer?

Yes, you can record a name, features, and even a photo for each item you are comparing. This allows for a more detailed and informed comparison process within the app.

### How many ratings does Which one do you prefer have?

Which one do you prefer has received 4 ratings. The app currently holds an average rating of 4.0 stars.

### What devices is Which one do you prefer available on?

Which one do you prefer is available for iPhone and iPod devices. It is designed for Apple's mobile operating system.

### How often is Which one do you prefer updated?

Which one do you prefer was last updated on April 13, 2016. The latest version available is 1.1.0.

### What is the age rating for Which one do you prefer?

Which one do you prefer has an age rating of 4+. This indicates it is suitable for children aged 4 and above.

### Does Which one do you prefer have ads?

No, Which one do you prefer does not contain advertisements. The app is ad-free, providing an uninterrupted user experience.

### Is Which one do you prefer free to download?

Yes, Which one do you prefer is available for free. There are no costs associated with downloading or using the core features of the app.

## Version history (last 3 releases)

### 1.1.0 — 2016-04-13

This app has been updated by Apple to display the Apple Watch app icon.

Supports screen sizes larger than 3.5 inch.

### 1.0.1 — 2012-09-25

Images copied from other Apps can be pasted.

### 1.0.0 — 2012-09-17

No release notes.

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## More apps by Junichiro Seyama

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All apps by Junichiro Seyama: https://appshunter.io/developer/537815782

## Related topics

[which one](https://appshunter.io/ios/topics/which-one)

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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 2026-08-19.*