PSOFT Audio Player vs Nu
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PSOFT Audio Player
This music player allows independent adjustment of key, playback speed, and sound extraction with exceptional audio quality. It's ideal for musicians, language learners, and anyone needing to analyze or manipulate audio content.
- Change playback speed
- Adjust musical key
- Modify voice characteristics
- Remove or extract specific sounds
- Analyze music and display chords
- Export modified audio (add-on)
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“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.
Nu
This music player allows you to create custom playlists from your device's music library and apply real-time audio effects. Adjust playback speed, pitch, EQ, and reverb to personalize your listening experience. It's ideal for learning music by ear or practicing songs.
- Custom playlist creation
- Real-time speed and pitch adjustment
- 10-band equalizer with presets
- Reverb effect with adjustable decay
- Center Cancel/Emphasis for stereo
- Repeat and quick jump playback controls
- Spectrum display
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This music player lets you create custom playlists from songs on your device and apply effects in real time. (This app's playlists are registered as song links; song data is not imported into the app.) Let's use this for learning music or voice by ear. Effects List : - Speed change - Pitch change - 10-Band EQ (Equalizer) - Reverb - Center Cancel / Center Emphasis Tap the buttons (Player, Tune, EQ, Reverb) on the toolbar (bottom bar) toggles the effects UI displayed on the control screen. The app retains the effect parameters you set, so your settings remain in effect even when you switch songs. Main features : - Add songs from your music library to a playlist within this app and play songs from the playlist. - Speed change (Change playback speed while maintaining pitch): 50-200% (maximum 12.5-800% (*)) - Pitch change (Change pitch while maintaining playback speed): ±1 octave (maximum ±2 octaves (*)) - 10-Band EQ (Equalizer): Frequency (32, 64, 125, 250, 500, 1k, 2k, 4k, 8k, 16k) Hz) / 22 presets - Reverb: Adjustable decay time (Low freq, High freq) / 13 presets - Center Cancel / Center Emphasis. (for stereo file) - Repeat playback : repeat off, all songs repeat, 1 song repeat. - Quick jump (back, forward) : Select jump interval from 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 15, 20, 25, 30 sec. - Switch songs (switch one song at a time based on the order of the playlist in the app) - Sort songs (Artist, Title, Recently Added, Formerly Added) - Supports spectrum display. (Calculation Method: Max, Average) - Supports Auto-Lock ON/OFF. - Supports displaying the player on the lock screen. (*) In-App Purchase requires to use the expanded maximum change range (speed: 12.5-800%, pitch: ±2 octaves). If you'd like to try out AUv3 host and export, please use our app "Audio Unit Player". ================================================ [Note] This app can't read songs of the following formats. - Songs from Apple Music, iCloud, iTunes Match - Songs that are protected by digital copyright (DRM) ================================================
Screenshots
Verdict
The clearest difference is price: Nu at Free against PSOFT Audio Player's $6.99. Nu also leads on ratings volume (63 vs 4). PSOFT Audio Player's advantage is ads (none vs shown) and review sentiment (71% vs 50%). On rating, update cadence, in-app purchases and device support 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
Nu is free to download; PSOFT Audio Player costs $6.99 up front. PSOFT Audio Player sells 1 one-off in-app purchase and Nu sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
PSOFT Audio Player holds the better App Store score, 4.5 against 4.3. That said, the two scores are not equally well evidenced: Nu has 63 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 71% of PSOFT Audio Player's written reviews are positive against 50% of Nu's.
Both ship on a similar rhythm, roughly every 3 months. Both last shipped on October 29, 2026.
| Parameter | PSOFT Audio Player | Nu |
|---|---|---|
| Price | $6.99 | Free — better |
| Rating | 4.5 (4 ratings) — better | 4.3 (63 ratings) |
| Positive reviews | 71.4% of reviews — better | 50.0% of reviews |
| Number of ratings | 4 | 63 — better |
| Update frequency | Every 3 months | Every 3 months |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 5 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | PSOFT | Loop-Sessions.LLC. |
Customer experience
PSOFT Audio Player
Nu
In-app purchases
PSOFT Audio Player
- Export Add-on$24.99
Nu
- Expand Speed / Pitch range$0.99
- Always remove ads.$6.99









