Comparison

PSOFT Audio Player vs Chord Analyzer Z

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

Head to head
About

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.

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

“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.

About

Chord Analyzer Z

Analyze music in real-time with visual and audible feedback. Record and playback audio, convert to MIDI, and identify chord structures and sound strength for instruments and vocals.

Highlights
  • Real-time chord and harmony analysis
  • Spectrum Roll Graph visualization
  • Audio recording and playback
  • MIDI file conversion and sharing
  • Flush Keyboard and Pitch Pipe
  • Zoom and scrollable keyboard
Features
Read full description

◎ Newly added conversion output to MIDI file (SMF) and file sharing function. ● Equipped with "Spectrum Roll Graph" that allows you to visually check the chord structure and sound strength of singing voice and harmony of musical instruments in real time. ● The sound picked up by the built-in microphone is recorded automatically saved. If you play the file, you can reproduce and check it as many times as you like. ● You can use not only recorded files but also audio files shared from other apps. ● The pitch and strength of chords and single notes can be checked both visually and audibly using "Flush Keyboard" and "Pitch Pipe". ● Simply touch the Spectrum Roll Graph to repeat playback of the same point any number of times. ● The keyboard and the graph can be freely controlled by intuitive touch operations for zooming and scrolling. ・Because the musical tone composition of multiple instruments and singing voices such as choruses and ensembles can be viewed in real time in the form of power spectra, it is also useful for play by ear . ・By playing the pitch pipe while looking at the spectrum graph, you can hear the harmony parts and the chords of the instruments. ・Please use it for checking and practicing the sound of the harmony part of karaoke. ・You can observe the overtone components that characterize musical instruments and singing voices. ・It is also useful for chord analysis and pitch analysis of music played in the background, such as Apple Music and YouTube. ■ Features of the app ・Real-time analysis of chords and harmony ・Various and rich screen display ・Screen mode linked to device orientation ・Real-time analysis of microphone input sound ・Recording of microphone input sound ・Playback of recorded files ・Playback loop, playback jump ・Analysis of recorded files ・Play shared files ・Analysis of shared files ・Pitch pipe ・Zoom & scroll keyboard ・Spectral Roll Graph ・Flash Keyboard ・(NEW) Conversion output to MIDI file (SMF) and file sharing ● Display items (real time) ・Spectrum Roll Graph ・MIDI note number ・Power Spectrum ・Oscilloscope ・Microphone input level ・Audio level meter ・Playback progress bar ● Sound playback ・Audio files (recorded files, shared files) ・Loop playback ・Replay jump ・Pitch pipe (6 types of tones, keyboard tap) ● Precautions ・To prevent howling, the microphone input signal is automatically disabled during pitch pipe or audio file playback. ・Instrumental sounds and singing voices contain sounds of various frequencies, such as fundamental tones and integer harmonics, and this app allows you to visually observe them.

Screenshots

PSOFT Audio Player4 screens
Chord Analyzer Z4 screens

Verdict

The call

The clearest difference is review sentiment: PSOFT Audio Player at 71% against Chord Analyzer Z's 33%. Chord Analyzer Z's advantage is in-app purchases (none vs 1) and price ($1.99 vs $6.99). On update cadence, ads, monetization model 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

CostPrice · In-app purchases · Ads · Monetization

PSOFT Audio Player costs $6.99 and Chord Analyzer Z $1.99 up front. PSOFT Audio Player sells 1 one-off in-app purchase. Chord Analyzer Z asks for nothing beyond the download.

UpkeepUpdate frequency

PSOFT Audio Player ships an update every 3 months, Chord Analyzer Z every 4 months. The most recent releases landed on October 29, 2026 and October 7, 2026 respectively.

Scorecard4 real differences · 6 level
PSOFT Audio Player versus Chord Analyzer Z: the parameters behind the verdict, then further details
ParameterPSOFT Audio PlayerChord Analyzer Z
Price$6.99$1.99 — better
Rating4.5 (4 ratings) — better—
Positive reviews71.4% of reviews — better33.3% of reviews
Number of ratings4 — better—
Update frequencyEvery 3 months — betterEvery 4 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationPaidPaid
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.613.0 — better
Further details — not scored
Size5 MB29 MB
Age rating4+4+
DeveloperPSOFTMasanori Katsuta

Customer experience

PSOFT Audio Player

All ratings4 ratings
Positive75.0%
Neutral25.0%
Negative0.0%
Written reviews28 reviews
Positive71.4%
Neutral7.1%
Negative21.4%

Chord Analyzer Z

Written reviews3 reviews
Positive33.3%
Neutral0.0%
Negative66.7%

In-app purchases

1 purchases

PSOFT Audio Player

One-time1
  • Export Add-on$24.99
None

Chord Analyzer Z

No in-app purchases

Questions

Is PSOFT Audio Player free?
PSOFT Audio Player costs $6.99, and also offers in-app purchases.
Is Chord Analyzer Z free?
Chord Analyzer Z costs $1.99, with no in-app purchases.
Do PSOFT Audio Player or Chord Analyzer Z have ads?
Neither PSOFT Audio Player nor Chord Analyzer Z shows ads.
Which is updated more often, PSOFT Audio Player or Chord Analyzer Z?
PSOFT Audio Player ships an update every 3 months, and Chord Analyzer Z every 4 months. Most recently, PSOFT Audio Player was updated on October 29, 2026 and Chord Analyzer Z on October 7, 2026.

Other comparisons