Comparison

Audio Unit Player vs Let's Unmix

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Audio Unit Player

This music player offers real-time audio processing, including time stretching, pitch shifting, and a 31-band equalizer. It supports AUv3 effects and allows for A-B loop playback, making it ideal for practice, transcription, and performance adjustments.

Highlights
  • 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
Read full description

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. ================================================

About

Let's Unmix

Isolate and control individual music tracks, including vocals, drums, and guitar, directly on your device. Convert audio to MIDI and export to other music applications. Customize playback with volume, panning, and speed adjustments.

Highlights
  • AI stem separation (up to 7 tracks)
  • Vocal and backing vocal isolation
  • Audio to MIDI conversion
  • Offline processing
  • Volume and panning control per track
  • Playback speed adjustment
  • Waveform editor
Features
Read full description

Effortlessly isolate and control your music—new in version 7.5: separate vocals into lead and backing (harmony)! Separate any song into up to 7 individual tracks—vocals, drums, bass, piano, guitar, backing vocals (harmony), and other instruments—right on your device. No uploads, works fully offline. Turn any part into MIDI. Convert vocals, bass, piano, guitar, and—new in version 7.5—backing vocals to MIDI, then export it to your DAW or other music apps. Once separated, you can save and export these tracks to other apps, including your favorite DAWs (Digital Audio Workstations). Customize your playback by adjusting the volume and panning for each track independently, or even change the playback speed to suit your needs. With the waveform editor, it's easy to select specific regions for playback or export, giving you full control over your audio. Import your music directly from the Media Library, other apps, or cloud services like iCloud, Dropbox, Google Drive, and more. We support a wide range of audio formats, including mp3, m4a, ALAC, AIFF, FLAC, and WAV. Export your edited tracks in m4a, ALAC, AIFF, MIDI, or WAV formats. For the best experience, we recommend using music files with a 44.1kHz sample rate (CD quality). All exports are set to 44.1kHz to ensure consistent, high-quality audio output. No ads. One purchase unlocks all features forever. No subscriptions.

Screenshots

Audio Unit Player3 screens
Let's Unmix3 screens

Verdict

The call

The clearest difference is rating: Let's Unmix at 4.4 against Audio Unit Player's 3.9. Let's Unmix also leads on monetization model (free with in-app purchases vs paid). On price, review sentiment, ratings volume and update cadence there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Audio Unit Player sells 1 one-off in-app purchase and Let's Unmix sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Let's Unmix holds the better App Store score, 4.4 against 3.9. Both are backed by a comparable volume of ratings — 32 and 69 respectively. Written reviews point the same way: 67% of Audio Unit Player's written reviews are positive against 69% of Let's Unmix's.

UpkeepUpdate frequency

Audio Unit Player ships an update every 2 weeks, Let's Unmix every 3 weeks. The most recent releases landed on November 1, 2026 and November 4, 2026 respectively.

Scorecard2 real differences · 8 level
Audio Unit Player versus Let's Unmix: the parameters behind the verdict, then further details
ParameterAudio Unit PlayerLet's Unmix
PriceFreeFree
Rating3.9 (32 ratings)4.4 (69 ratings) — better
Positive reviews66.7% of reviews69.1% of reviews — better
Number of ratings3269 — better
Update frequencyEvery 2 weeks — betterEvery 3 weeks
AdsYesYes
In-app purchasesYesYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.016.0 — better
Further details — not scored
Size5 MB508 MB
Age rating4+4+
DeveloperLoop-Sessions.LLC.Hikaru Tsuyumine

Customer experience

Audio Unit Player

All ratings30 ratings
Positive70.0%
Neutral6.7%
Negative23.3%
Written reviews48 reviews
Positive66.7%
Neutral4.2%
Negative29.2%

Let's Unmix

All ratings69 ratings
Positive82.6%
Neutral5.8%
Negative11.6%
Written reviews81 reviews
Positive69.1%
Neutral11.1%
Negative19.8%

In-app purchases

1 purchases

Audio Unit Player

One-time1
  • Always remove banner ads.$3.99
1 purchases

Let's Unmix

One-time1
  • Premium Version$8.99

Questions

Is Audio Unit Player free?
Audio Unit Player is free to download, with in-app purchases available.
Is Let's Unmix free?
Let's Unmix is free to download, with in-app purchases available.
Which has better reviews, Audio Unit Player or Let's Unmix?
Let's Unmix is rated higher. Audio Unit Player averages 3.9 out of 5 from 32 ratings, while Let's Unmix averages 4.4 from 69 ratings.
Do Audio Unit Player or Let's Unmix have ads?
Both Audio Unit Player and Let's Unmix show ads.
Which is updated more often, Audio Unit Player or Let's Unmix?
Audio Unit Player ships an update every 2 weeks, and Let's Unmix every 3 weeks. Most recently, Audio Unit Player was updated on November 1, 2026 and Let's Unmix on November 4, 2026.

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