# hi-blind : Blind Listening Test with High Resolution Audio

> hi-blind : Blind Listening Test with High Resolution Audio (iPhone/iPad app by YU HASHIZUME.)

- Source: https://appshunter.io/ios/app/hi-blind-blind-listening-test-with-high-resolution-audio/id1063205314 (this page in markdown: same URL + `.md`)
- Developer: [YU HASHIZUME](https://appshunter.io/developer/654717473)
- Category: Music, Utilities, Music
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 8.4 · 6 MB
- Languages: English, Japanese, Korean, Chinese, Chinese
- Released: 2016-01-16
- Data updated: 2026-05-17
- User reviews in markdown: https://appshunter.io/ios/app/hi-blind-blind-listening-test-with-high-resolution-audio/id1063205314/reviews.md

## What is hi?

"hi-blind" is a blind test app supporting high-res sound sources.
With hi-blind, sound source files in a variety of formats, including high-res sound sources, can be encoded in AAC so you can listen and compare quality.


・ABX Mode
ABX Mode uses selected files transferred to the app via the iPod library or the "File Sharing" feature on iTunes to create AAC files of a user-specified sound quality (32 - 256kbps). 
A randomly-selected file is played, and users are asked to guess if it was the original file or the AAC file. 

・SORT Mode (Pro version only
Specified sound files are converted into multiple AAC files with various bit rates.
Sort Mode auditions these sound files and arranges them by bit rate regardless of format.

・Supported formats
 - FLAC/AIFF/WAV/ALAC (-192kHz/24bit)
 - AAC, MP3 (-320kbps)
* DSD is not supported.
* Cannot play files protected by DRM.

・In the PRO version:
　- SORT Mode is available.
　- Comparisons can be made using high-res sound sources and uncompressed PCM audio (44.1kHz).
　- No advertisements.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Pro Version | $2.99 | one-time |



## Version history (last 1 release)

### 1.0.0 — 2016-01-16

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

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| [HED Unity](https://appshunter.io/ios/app/hed-unity/id1633155374) | 2.3 (3) | Free | Music |

## More apps by YU HASHIZUME

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All apps by YU HASHIZUME: https://appshunter.io/developer/654717473

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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 2026-05-17.*