# PSOFT Audio Player

> Advanced audio player for pitch, speed, and sound manipulation with high-quality results. (iPhone/iPad app by PSOFT.)

- Source: https://appshunter.io/ios/app/psoft-audio-player/id893103463 (this page in markdown: same URL + `.md`)
- Developer: [PSOFT](https://appshunter.io/developer/373752450)
- Category: Music, Lifestyle
- Price: $6.99 with in-app purchases
- Rating: 3.50/5 from 4 App Store ratings · 26 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.6 · 5 MB
- Languages: American English, Japanese
- Released: 2014-07-24
- Data updated: 2026-08-24
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/psoft-audio-player/id893103463/reviews.md

## What is PSOFT Audio Player?

“Freely manipulate sound with incredibly natural results.”

Make the comparison with your own ears. This music player makes it easy to independently change your music's key and playing speed and remove or extract specified sounds, while preserving an overwhelming audio quality that cannot be matched.

Recommended for:
 ・ Musical instrument practice.
 ・ Making karaoke tracks.
 ・ Musical transcription.
 ・ Creating audio tracks for dance practice.
 ・ Learning foreign languages by listening to podcasts.
 ・ Efficiently gathering information from podcasts.
 ・ Audio-typing comfortably.

With usual audio equipment, large changes to key and playing speed typically result in a heavy degradation of the audio quality. However, by using our company's “PhaseGear” technology, this app succeeds in reducing audio degradation to its utmost minimum. The result is surprisingly natural-sounding audio.

============== [ Main Features ] ==============

▼ Change playing speed [Time stretch]
  Change the playing speed without affecting the key (0.00x – 4.00x).

▼ Change key [Pitch shift]
  Change the key without affecting the playing speed (±24.00 semitones).

▼ Change voice [Formant]
  Apply changes to voices (±24.00).
  Includes the [Correction] function which restrains voice alterations caused by changing the key.

▼ Remove / extract sounds [Audio masking]
  Visualize the audio and remove / pick out sound from a specified band.
  Obtain exceptional audio quality thanks to a new technology preventing mixing in rhythm sound.
  * Depending on the musical structure, it might not be possible to obtain the desired results.

▼ Analyze audio and display chords [Musical scale analysis]
  Analyzes music as it plays and displays the musical scale on a keyboard.
  Also allows on-screen display of inferred chords.

▼ Output the modified audio [Export (*Add-on)]
  Output the audio data file with modified key, sound masking, etc.
  The exported file can also be used with a PC or other device.
  * This function must be purchased as an add-on.

======================================

■ Specifications
- Play menu
  - Play / Pause
  - Skip 15s / Back 15s (*Only available on 4 inch displays)
  - Fast forward / Rewind
  - Next song / Previous song
  - Play position adjustment slider
- Play mode
  - Play all songs
  - Repeat all songs
  - Play 1 song
  - Repeat 1 song
  - Shuffled play
  - Shuffled repeat
- Share song information
  - Send the current song info to other apps, share functionality.
- Select songs by
  - Playlist
  - Song
  - Artist
  - Album
  - Composer
  - Genre
  - Compilation
  - Podcast
  - Audiobook
  - Document
- Supports background play

* Note
Contents on iCloud and protected contents not supported.


■ About PhaseGear
PhaseGear is our company's audio signal processing engine based on patented technology. It implements high quality time stretch and pitch shift processing as well as superior sound masking. Please refer to the link below for more details about this technology. (*In Japanese)

http://www.psoft.co.jp/jp/corporate/technology/phasegear.html

* Patent registered in Japan, USA and South Korea.

## Key features

- Change playback speed
- Adjust musical key
- Modify voice characteristics
- Remove or extract specific sounds
- Analyze music and display chords
- Export modified audio (add-on)

## Pricing and in-app purchases

Base price: $6.99.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Export Add-on | $24.99 | one-time |


## Recent user reviews (10 of 26)

All indexed reviews: https://appshunter.io/ios/app/psoft-audio-player/id893103463/reviews.md

### 5/5 — コード表示修正アプデありがとうございます！

*2026-05-14*

おかげで100%快適です

あとアプリ内で音量を1%刻みで変更出来たら良いなと思います(最小0%, 最大200%)

もし今後気になるバグを発見したらまた報告します

### 5/5 — Superbe 👍

*2026-04-25*

Please change the duration of the playing track, according to the speed value applied.

Thank you.

### 3/5 — プレーヤー画面にバグが

*2025-10-31*

長年愛用してきたけど、iPhone17 pro maxにしてからプレーヤー画面だけが小さくなるという不具合が発生

画面が小さくなってしまっているので操作がしづらくなった

早急に直してほしい！！！

### 4/5 — iPad

*2025-09-23*

iPadにも対応してほしい。
あと、iOS26になったのにプレイリストを押してから曲を選択すると画面が左上にズレて画角全てに入らないのはなぜ？

### 5/5 — ほぼ最強のアプリ

*2024-10-28*

Dawなんかに入ってるEQもどきとは格が違います

### 5/5 — 素晴らしい

*2024-02-18*

お気に入りの音楽を色々な聴きかたで楽しめて音質劣化しない優秀アプリ。
もっと評価されるべき。

### 5/5 — 音が出なくなった

*2023-11-18*

いろんな曲を選んでもジーと言うふうになって、音が出なくなってしまいました。
このソフトで聴くときだけだめになったのですが何かありますか。
今でも不具合の対応をされてますか。

### 5/5 — 素晴らしい！

*2021-10-08*

DTMで独学でkeyを変えたり、するのは、 他のアプリにもありますが、声のピッチ も変じゃなくエクスポートできて、スピード も、自由自在に。(Melodyne系に似てる！) 昔の耳コピ機材で、速度を落として練習 していましたが、そんな方には是非とも オススメできます！ ただし、著作権的に教室等ではNGと思う ので独学で♪

### 5/5 — Astoundingly good tool for musicians

*2021-01-13*

Using this app you can isolate an instrument, slow down playback (with no key change and superb sound quality) and watch the notes being played on a keyboard in real time. It even makes a good assessment of the chords. A jazz trumpet solo that would have taken an afternoon to transcribe took minutes. Using this I can load up a track and literally hear what is being played in terms of scale degrees etc almost immediately. It is totally addictive and a game changer for me.

### 2/5 — 突然、異音がして使えません

*2020-10-18*

何年もお世話になっております。
突然、異音が発生しました、
どのファイルも聞くことができません。
再生ボタンを押しても【ビー】という
音が鳴るだけです。
一切使えなくなりました。

どうしたら良いでしょうか？？

## Frequently asked questions about PSOFT Audio Player

### What is PSOFT Audio Player?

PSOFT Audio Player is a music application that allows users to freely manipulate sound. It enables independent changes to key and playback speed, as well as the removal or extraction of specified sounds, all while preserving high audio quality.

### How much does PSOFT Audio Player cost?

PSOFT Audio Player is a paid application priced at $6.99. There is also an additional add-on for exporting modified audio files.

### What devices does PSOFT Audio Player support?

PSOFT Audio Player is available for iPhone and iPod devices. It is rated for ages 4 and up.

### Can I export my modified audio from PSOFT Audio Player?

Yes, the ability to export modified audio files, including changes to key and sound masking, is available as an add-on purchase within the app.

### Does PSOFT Audio Player have ads?

No, PSOFT Audio Player does not contain advertisements. It is a paid application.

### How often is PSOFT Audio Player updated?

The latest version of PSOFT Audio Player is 1.13, and it was last updated on November 20, 2025. This indicates the app is actively maintained.

### What makes PSOFT Audio Player's audio quality unique?

The app utilizes the company's proprietary 'PhaseGear' technology, which significantly reduces audio degradation typically associated with large changes in key and playback speed, resulting in natural-sounding audio.

### What are the main use cases for PSOFT Audio Player?

PSOFT Audio Player is recommended for musical instrument practice, creating karaoke tracks, musical transcription, dance practice audio creation, learning foreign languages, and efficiently gathering information from podcasts.

## Version history (last 5 releases)

### 1.15 — 2026-05-13

- Fixed an issue where the chords analysis results were not displayed correctly.

### 1.14 — 2026-04-21

- Fixed an issue that caused the app to crash when an audio file was opened from another app.

### 1.13 — 2025-11-20

- Support for iOS 26.
- Updated requirements: iOS 15.6 and up is now required.

### 1.12 — 2018-12-17

- Fixed a problem where the app was not responding to operations from remote controls.

### 1.11 — 2018-12-10

- Fixed a problem that was preventing switching between playback and pause using remote controls.

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## More apps by PSOFT

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All apps by PSOFT: https://appshunter.io/developer/373752450

## Related topics

[psoft](https://appshunter.io/ios/topics/psoft) · [psoft audio player](https://appshunter.io/ios/topics/psoft-audio-player)

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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 2026-08-24.*