iPhone Screenshots


The app is good for performers who want a faster or slower version of a music piece.

And for others, it can be HILARIOUS to hear your favorite song in a different tempo!

Two simple steps in the app:
1. Select a song from your iTunes library
2. After the song is processed, you can then change the speed of the song with the slider.

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

This is the free version of Tempo Changer.

What’s New

Version 1.5

Update for iOS 11
Faster file processing

Ratings and Reviews

1.3 out of 5
10 Ratings

10 Ratings

ZZ1006D ,

Was good but no longer works

I purchased this a while back and it worked pretty good. After one of the updates or perhaps a new phone, it now only lets me adjust one song (trial) and then says I have to pay to upgrade. Based on the ratings, I will pass

Ritchiebloom ,

Lost 99 cents to the ‘universe’

I bought the full version, but it’s still broken and cuts off after 30 seconds. When you go to ‘app support’ the email form is broken and says ‘your message has been lost in the universe’. 😒

Iwannamango ,

Distorts sound like a toy radio with static

Sound quality is so mangled that the app is utterly useless. I thought upgrading to paid version would fix sound quality, but no change. What a waste.


KBIC International Limited
1.3 MB

Requires iOS 10.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, Japanese

Age Rating
In-App Purchases
  1. Tempo Changer Full Version $0.99


  • Family Sharing

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

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