Comparison

PSOFT Audio Player vs MoDoSolfa

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
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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.

About

MoDoSolfa

Features
Read full description

MoDoSolfa is a music training app that makes developing your relative pitch and play-by-ear skills fun. With over 10 types of training in all 12 keys, you can practice every day like a game. The app automatically tracks your weak points and shows your progress in easy-to-read graphs.

Screenshots

PSOFT Audio Player4 screens
MoDoSolfa4 screens

Verdict

The call

The clearest difference is price: MoDoSolfa at Free against PSOFT Audio Player's $6.99. MoDoSolfa also leads on in-app purchases (none vs 1) and update cadence (every 3 weeks vs every 2 months). PSOFT Audio Player's advantage is iOS requirement (15.6 vs 18.2). On ads 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

MoDoSolfa is free to download; PSOFT Audio Player costs $6.99 up front. PSOFT Audio Player sells 1 one-off in-app purchase. MoDoSolfa asks for nothing beyond the download.

UpkeepUpdate frequency

PSOFT Audio Player ships an update every 2 months, MoDoSolfa every 3 weeks. The most recent releases landed on October 10, 2026 and September 30, 2026 respectively.

Scorecard4 real differences · 6 level
PSOFT Audio Player versus MoDoSolfa: the parameters behind the verdict, then further details
ParameterPSOFT Audio PlayerMoDoSolfa
Price$6.99Free — better
Rating3.5 (4 ratings) — better—
Positive reviews69.2% of reviews—
Number of ratings4 — better—
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationPaid—
DevicesiPhone, iPod — betteriPhone
Requires iOS15.6 — better18.2
Further details — not scored
Size5 MB30 MB
Age rating4+4+
DeveloperPSOFTHidenori Ishiii

In-app purchases

1 purchases

PSOFT Audio Player

One-time1
  • Export Add-on$24.99
None

MoDoSolfa

No in-app purchases

Questions

Is PSOFT Audio Player free?
PSOFT Audio Player costs $6.99, and also offers in-app purchases.
Is MoDoSolfa free?
MoDoSolfa is free to download, with no in-app purchases.
Do PSOFT Audio Player or MoDoSolfa have ads?
Neither PSOFT Audio Player nor MoDoSolfa shows ads.
Which is updated more often, PSOFT Audio Player or MoDoSolfa?
PSOFT Audio Player ships an update every 2 months, and MoDoSolfa every 3 weeks. Most recently, PSOFT Audio Player was updated on October 10, 2026 and MoDoSolfa on September 30, 2026.

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