iPhone Screenshots


You can remove the vocal of a song, make a song faster or slower, and change the key of a song with this app!

The app is good for performers who cannot find the right music for their key, want a faster or slower version of the music, or cannot find the music of a song with no vocals.

And for others, it is just HILARIOUS to hear your favorite song in a different tempo or key!

Two simple steps in the app:
1. Select a song from your iTunes library
2. After the song is processed, you can then turn on and off vocals with the switch, change the speed and the pitch of the song with the sliders.

ZTX LE Time Stretch/Pitch Shift technology licensed from Zynaptiq GmbH, http://www.zynaptiq.com/ztx(c) Zynaptiq GmbH

What’s New

Version 1.6

This app has been updated by Apple to display the Apple Watch app icon.

Support for iOS 11
Faster file processing time

Ratings and Reviews

2.1 out of 5
33 Ratings

33 Ratings

Jraquet ,

Good Functionality(When it Works)

The app is decent, but crashes constantly, takes forever to load a song, and distorts the track heavily. Also the "Vocals" option doesn't just remove the vocals from the track, but removes all the high frequency range, so all you hear is the mid-range instruments like guitar. Being able to adjust the pitch by a half or whole step is a nice feature, though.



waste of money. will crash all the time and i have the patience of Job. no stars. developers r aware but obviously have done nothing. if u click the prompt from the free version to the paid version IT WILL NOT WORK. u must first delete the free app and install the paid version and pay for it to crash more than on the free version. great idea, would be immensely musically helpful if it worked and if these developers paid attention to paying customers who have repeatedly told them to fix these two problems on reviews. But yet they continue to develop and request more ideas for additional apps prior to fixing those out there. i would say this a nickel and dime scam (that pockets them 1000’s of dollars) that needs to be investigated by authorities.

Tweensing ,

Does not work properly

The free version works for only 30 seconds of the song. While using the free app, I was offered the opportunity to upgrade. I pressed the button to upgrade, costing $2.99. I was never given the full version but charged $2.99. I went ahead and then I reopened the App Store and purchased the full version (versus upgrading within the free app), and “lo and behold” the app worked. I am unhappy because I was billed twice for this app and the first purchase never worked.

Moral of the story, if you are in s bind and need this type of app either purchase from someone else or purchase the full version at the start. Do not download the free app thinking you can upgrade within the app. The feature does not work.

App Privacy

The developer, KBIC International Ltd, has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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