# Audio Unit Player — AUv3 host / Export audio

> Music player with real-time audio effects, EQ, and AUv3 support. (iPhone/iPad app by Loop-Sessions.LLC..)

- Source: https://appshunter.io/ios/app/audio-unit-player/id734191615 (this page in markdown: same URL + `.md`)
- Developer: [Loop-Sessions.LLC.](https://appshunter.io/developer/414215366)
- Category: Music, Utilities
- Price: Free (on sale, was $0.99)
- Rating: 3.90/5 from 27 App Store ratings · 46 written reviews indexed
- Age rating: 4+
- Requires: iOS 16.0 · 5 MB
- Languages: American English, Japanese
- Released: 2013-11-15
- Data updated: 2026-08-31
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/audio-unit-player/id734191615/reviews.md

## What is Audio Unit Player?

This app is a music player that can process the following effects in real time.
- Time stretch (0.5-2.0 double speed)
- Pitch shift (-1 ~ +1 octave)
- 31 band equalizer
- Reverb
- AUv3 (Audio Unit v3) host

[Use cases]
- Karaoke's training. (Can be changed speed units of 10%, pitch shift in semitones easily)
- Can playback at reduced tempo to copy phrase for guitar or bass, the keyboard instrument.
- Can playback by changing the pitch to play by changing the key in the band performance (Developer himself has experience).

[Function]
- Perform time stretch (50 - 200%) / pitch shift (-12 - +12) in real time.
- 31 bands EQ (Hz: 20, 25, 31.5, 40, 50, 63, 80, 100, 125, 160, 200, 250, 315, 400, 500, 630, 800, 1k, 1.25k, 1.6k, 2k, 2.5k, 3.15k, 4k, 5k, 6.3k, 8k, 10k, 12.5k, 16k, 20k).
- EQ preset (Abundant Built-in Presets / Custom Presets).
- Reverb: Adjustable decay time (Low freq, High freq) / 13 presets
- Reverb preset (Built-in Presets / Custom Presets)
- Can be used as an AUv3 host.
- A-B loop playback.
- Center Cancel / Center Emphasis.
- Lch, Rch each mute.
- Quick fast forward, rewind (specify the number of seconds).
- Check and set current position graphically in wave view.
- Supports Auto-Lock ON/OFF.
- Supports background playback.
- Supports export (file writing) function (Each effect (speed/pitch/EQ) value set for each song is also reflected. The range specified in the loop section is output.)

In addition to loading "music" data included in the standard music app, it also supports the function to import audio files from other apps ("Voice Memos" etc.).

[How to import from "Voice Memos"]
1. Start the app "Voice Memos" and tap the mark "..." of the file to be imported from the list.
2. Tap "Share" on the sheet displayed from the bottom.
3. Tap "More" found by scrolling the displayed list of sharing destination apps to the right.
4. Select "AU Player" if available. The file is copied to this app.

================================================
[Note 1]
This application will not be able to read songs of the following formats.
- Songs from Apple Music, iCloud, iTunes Match
- Songs that are protected by digital copyright (DRM)

[Note 2]
Depending on the state of your device, your custom AUv3 effects may not appear in the list.
As a solution, you can solve the problem by starting "GarageBand" once and restarting this app.
================================================

## Key features

- Real-time time stretch (50-200%)
- Real-time pitch shift (-12 to +12 semitones)
- 31-band equalizer with presets
- AUv3 effects support
- A-B loop playback
- Background playback
- Audio file export

## Recent user reviews (10 of 46)

All indexed reviews: https://appshunter.io/ios/app/audio-unit-player/id734191615/reviews.md

### 5/5 — Thank you 🙏

*2026-08-28*

👍

### 5/5 — Custom presets for 31 bands equaliser and custom presets for the reverb effects.

*2026-08-03*

Thank you for your kind reply 🙏❤️ I can’t wait for your next update for this 😊

**Developer response:** Thank you for your comment.

We plan to add a custom preset feature for the 31-band equalizer in the next update.

### 5/5 — Save my own equaliser and reverb settings.

*2026-07-07, version 6.2.8*

Can you please add the option to save my own equaliser and reverb settings in the presets. Also please add the crossfade playback option. Don’t mind if it is a premium feature but please add it.
Thank you so much 🙏😊

### 5/5 — Save my own equaliser and reverb settings.

*2026-06-22*

Can you please add the option to save my own equaliser and reverb settings in the presets.
Thank you so much 🙏😊

### 5/5 — Playlist mode?

*2026-06-09*

Absolutely love the app, I’ve used it for years, would you consider making an option so you could have playlists? It would be nice to be able to organize all the edited songs without having to do workarounds to make new mp3s.

### 5/5 — Super einfach!

*2025-12-17*

Macht was es soll, sehr übersichtlich und bedienerfreundlich ohne unnötigen Schnickschnack.👍👍👍
Danke

### 5/5 — NICE!

*2025-08-12*

USA!

### 1/5 — Not good…

*2025-05-22*

Whenever I press the rewind button to listen to my songs it crashes. All this time I’ve had this and the developer does nothing to fix it. Deleting it off my phone for a better player!

**Developer response:** Thank you for your comment.
In the update (Ver.6.2.4), we fixed the issue where the app would crash when you moved the playback position during playback.
Please update and try it out.

### 5/5 — Gusury

*2025-04-10*

Fudjcjxjx

### 4/5 — Better than it was. However…

*2025-03-14, version 6.2.0*

It’s not perfect... When I try and scroll the bar to rewind my songs with, it still crashes and it sends me back to the Home Screen. The good thing is is that it doesn’t crash anywhere near as much as it did before. So there’s always room for a bit of progression! 4/5

## Frequently asked questions about Audio Unit Player

### What is the price of Audio Unit Player?

Audio Unit Player is a paid app, costing $0.99. This one-time purchase grants you access to all its features.

### What devices does Audio Unit Player support?

Audio Unit Player is available for both iPhone and iPad, allowing for flexible use across Apple mobile devices.

### Can Audio Unit Player play music in the background?

Yes, Audio Unit Player supports background playback, so you can continue processing audio while using other apps or when your screen is locked.

### What audio formats are not supported by Audio Unit Player?

Audio Unit Player cannot read songs from Apple Music, iCloud, or iTunes Match, nor can it play songs protected by digital copyright (DRM).

### How often is Audio Unit Player updated?

The latest version, 6.2.8, was last updated on March 22, 2026. While this date is in the future, it suggests a history of regular updates for the application.

### What is the age rating for Audio Unit Player?

Audio Unit Player has an age rating of 4+, making it suitable for a wide range of users.

### How can I import audio files from Voice Memos into Audio Unit Player?

To import from Voice Memos, open Voice Memos, tap the '...' menu for the desired file, select 'Share,' tap 'More,' and then choose 'AU Player' from the list of sharing destinations.

### What is the user sentiment for Audio Unit Player based on ratings?

Audio Unit Player has a rating of 3.8 stars from 24 ratings, indicating generally positive user reception for its features and functionality.

## Version history (last 5 releases)

### 7.0.2 — 2026-08-27

Updated the system functionality.

### 7.0.1 — 2026-08-24

With this update Ver.7, we changed the way this app is offered.
The app itself will now be free, and banner ads will be displayed to new users.
However, we have implemented a system to ensure that ads are not shown to users who previously purchased the app, so there is no actual change for them.

### 7.0.0 — 2026-08-24

In version 7.0.0, we updated the app’s internal structure for future enhancements. We'll continue making adjustments in future updates.

### 6.5.1 — 2026-08-19

Added a notice that appears when the app starts. Please take a look.

### 6.5.0 — 2026-08-18

- Added Reverb effect (supports custom presets).
- Updated the 31-band EQ UI (iPhone: changed screen design; iPad: moved to a dedicated screen).

## Apps similar to Audio Unit Player

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [AudioStretch Lite](https://appshunter.io/ios/app/audiostretch-lite/id647190921) | 4.0 (617) | Free | Music |
| [Roll Player Piano](https://appshunter.io/ios/app/roll-player-piano/id1568006330) | — | Free | Music |
| [Let’s Unmix Audio Unit](https://appshunter.io/ios/app/lets-unmix-audio-unit/id1631417268) | 3.4 (9) | Free | Music |
| [capfuse: Mashup & Remix Maker](https://appshunter.io/ios/app/capfuse-mashup-and-remix-maker/id6745314888) | — | Free | Music |
| [KQ Audio Player](https://appshunter.io/ios/app/kq-audio-player/id6743190146) | 5.0 (1) | $4.99 | Music |
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## More apps by Loop-Sessions.LLC.

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All apps by Loop-Sessions.LLC.: https://appshunter.io/developer/414215366

## Related topics

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

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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 2026-08-31.*