Comparison

SoundScopePhone vs ExtVocal Pro

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

Head to head
About

SoundScopePhone

Actively listen to music by focusing on specific instruments or performers using spatial audio and AI. Adjust volume and amplification with a mixing console to highlight desired sounds.

Highlights
  • Spatial acoustic experience
  • Active music listening
  • Focus on specific performers
  • Adjust sound range
  • Mixing console
  • Boost mode
Features
Read full description

RIKEN’s Sound Scope Phone introduces a new way of actively listening to music by enabling you to focus on the part you want to listen to. All you need is an iPhone and earphones or headphones for this active music listening experience using spatial sound and AI. - Spatial acoustic experience Put on your earphones or headphones and press the play button on Sound Scope Phone. You will hear performers playing instruments around you. If you hold your iPhone in front of you, you'll see the application tracking your face on the display. By turning your head left and right, you can follow the sound of the performers on their respective sides. Likewise, if you turn around with your iPhone in hand, you will be able to face the performers behind you. - Active music listening experience This app provides an active music listening experience by enabling you to focus on the certain performers you want to hear. If you turn to face the performer of your choice, it will sound as if they are directly in front of you. By moving your left or right palm closer or further from your ears, you can adjust the range of the performance that you want to focus on. You can highlight one part or multiple parts such as the horn section and the rhythm section. You can check the direction of the performer and the direction you are facing on the position display. - Mixing console and boost mode Press the settings button at the bottom right to open the mixing console. The mixing console enables you to operate the faders to fine-tune the volume of each part. When the boost switch is turned on, the targeted sound will be more amplified. You can lower the boost limit fader to adjust the level. - Development history The Music Information Intelligence Team, part of the RIKEN Center for Advanced Intelligence Project, is exploring potential new ways of creating and listening to music using AI. When listening to classical music, for example, you may want to hear the first violin a little more clearly, or suppress the sound of the trombone sound, or only hear the flute. Sound Scope Phone is an app that enables you to specify the sections you want to listen to. The app is available to the public to gauge the overall interest in such a way of listening to music. We ask that users the app who are prompted to fill out a questionnaire to please submit their responses. We plan to add songs in the future. If you are interested in the app and technology, please contact us at the support URL.

About

ExtVocal Pro

This application allows users to separate audio files into five distinct stems: vocals, drums, bass, piano, and other. You can then export these individual stems as separate files for further use.

Highlights
  • Source separation
  • 5 stem export
  • Vocals extraction
  • Drums extraction
  • Bass extraction
  • Piano extraction
  • Other instrument extraction
Features
Read full description

Extvocal Pro is an app for music source separation. It separates an audio file into 5 stems - vocals, drums, bass, piano and other. You can export the separated stems into files.

Screenshots

SoundScopePhone3 screens
ExtVocal Pro4 screens

Verdict

The call

The clearest difference is rating: SoundScopePhone at 5.0 against ExtVocal Pro's 4.3. ExtVocal Pro's advantage is update cadence (monthly vs every 5 months) and ratings volume (10 vs 1). On price, ads, in-app purchases and monetization model 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

SoundScopePhone holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: ExtVocal Pro has 10 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

SoundScopePhone ships an update every 5 months, ExtVocal Pro monthly. The most recent releases landed on October 24, 2026 and October 21, 2026 respectively.

Scorecard3 real differences · 7 level
SoundScopePhone versus ExtVocal Pro: the parameters behind the verdict, then further details
ParameterSoundScopePhoneExtVocal Pro
PriceFreeFree
Rating5.0 (1 ratings) — better4.3 (10 ratings)
Positive reviews—90.9% of reviews
Number of ratings110 — better
Update frequencyEvery 5 monthsMonthly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS14.1 — better15.6
Further details — not scored
Size113 MB343 MB
Age rating4+4+
Developernewforestar co,.ltdsayitsforever

Customer experience

SoundScopePhone

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

ExtVocal Pro

All ratings10 ratings
Positive80.0%
Neutral10.0%
Negative10.0%
Written reviews11 reviews
Positive90.9%
Neutral0.0%
Negative9.1%

In-app purchases

None

SoundScopePhone

No in-app purchases

None

ExtVocal Pro

No in-app purchases

Questions

Is SoundScopePhone free?
SoundScopePhone is free to download, with no in-app purchases.
Is ExtVocal Pro free?
ExtVocal Pro is free to download, with no in-app purchases.
Which has better reviews, SoundScopePhone or ExtVocal Pro?
SoundScopePhone is rated higher. SoundScopePhone averages 5.0 out of 5 from 1 ratings, while ExtVocal Pro averages 4.3 from 10 ratings.
Do SoundScopePhone or ExtVocal Pro have ads?
Neither SoundScopePhone nor ExtVocal Pro shows ads.
Which is updated more often, SoundScopePhone or ExtVocal Pro?
SoundScopePhone ships an update every 5 months, and ExtVocal Pro monthly. Most recently, SoundScopePhone was updated on October 24, 2026 and ExtVocal Pro on October 21, 2026.

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