# Music Factory Lite - — Change key tempo and vocal

> Music manipulation app to change key, tempo, and remove vocals. (iPhone/iPad app by KBIC International Ltd.)

- Source: https://appshunter.io/ios/app/music-factory-lite/id510346984 (this page in markdown: same URL + `.md`)
- Developer: [KBIC International Ltd](https://appshunter.io/developer/505094094)
- Category: Music, Entertainment
- Price: Free with in-app purchases
- Rating: 1.70/5 from 55 App Store ratings · 76 written reviews indexed
- Age rating: 4+
- Requires: iOS 10.0 · 1 MB
- Languages: American English, Japanese
- Released: 2012-03-21
- Data updated: 2026-06-10
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/music-factory-lite/id510346984/reviews.md

## What is Music Factory Lite?

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

This is a free version of Music Factory - Change key, change tempo and remove vocal.

## Key features

- Change music key
- Adjust music tempo
- Remove vocals
- Select songs from iTunes
- Real-time pitch and speed control

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Full Version | $2.99 | one-time |


## Recent user reviews (10 of 76)

All indexed reviews: https://appshunter.io/ios/app/music-factory-lite/id510346984/reviews.md

### 1/5 — Rip off

*2026-02-17, version 1.6*

I paid for full version and it will only play 30 seconds of a song.

### 1/5 — Was conned

*2025-10-24, version 1.6*

I wished I had read the reviews before purchasing this POS. Also tried contacting the developer on their website to which twice I got the answer “Opps. Your message has been lost in the Universe”
AVOID AVOID AVOID!!

### 1/5 — Doesn’t work with Apple Music

*2025-02-10, version 1.6*

What a waste. You can’t ise anything you downloaded if have an appleyou have an Apple Music subscription. Absolutely useless!!!

### 1/5 — Ripped off!

*2022-01-01, version 1.6*

After purchasing the full version of this app, it still only plays thirty seconds of the selected song. I bought the full version of this app once before but somehow lost it from my iPhone. I tried reloading it but was unable to restore purchase. I bought it again and this time it still won’t work. Don’t waste your money or time on this app.

### 1/5 — Don’t Purchase!!!!

*2021-12-18, version 1.6*

SCAM!!!!

### 1/5 — RIP-OFF!

*2021-06-19, version 1.6*

Why are you still in continuing to be in business continuing to rip people off?

### 1/5 — Totally a waste of money. Can’t even open some songs in my playlist. Totally disappointed

*2020-08-28, version 1.6*

Don’t buy full version. Totally a waste of money. Can’t even open some songs in my playlist. Totally disappointed.

### 1/5 — What a waste of money!!

*2020-04-29, version 1.6*

Why didn’t I check the reviews carefully?? This is exactly same as other reviews!! You tried and since it’s only $2.99 you thought just give it a chance by buying the full version THAT DO NOT WORK!!! You really need to delete the lite version and buy from the $2.99 download or IT DOESN’T WORK!! It’s like a broken arcade that keeps on taking your tokens but the game won’t play!

### 1/5 — Disappointed

*2019-10-02, version 1.6*

I purchased the app for $2.99 and it still does not work. It only plays 30 seconds of the song and tells me I need to purchase the full version WHICH I ALREADY DID!!! When I try to contact the company their message system keeps failing. Please fix this or give me a refund.

### 1/5 — Not good at all

*2019-09-26, version 1.6*

I purchased this app and found it does not work well as they described.
1. When a song is loaded the song may be disappeared automatically.
2. When you loaded this song again this app would ask you to buy it again even a receipt of $4.49 has received from Apple.

## Frequently asked questions about Music Factory Lite

### What does Music Factory Lite do?

Music Factory Lite allows you to modify your music by changing its key and tempo, as well as removing vocals. You can select songs from your iTunes library and then use intuitive sliders to adjust the pitch and speed.

### Who is this app for?

This app is designed for performers who need to adapt music to their specific key or tempo, or who require instrumental tracks. It's also for anyone who enjoys creatively experimenting with their favorite songs for entertainment.

### How do I use the app?

Using the app is straightforward. First, select a song from your iTunes library. Once the song is processed, you can toggle vocals on or off, and use sliders to change the speed and pitch of the music.

### Is this a free app?

Yes, this is a free version of the app. It offers core functionality for changing key, tempo, and removing vocals. There may be in-app purchases available for additional features or a full version.

### What kind of technology does it use?

The app utilizes ZTX LE Time Stretch/Pitch Shift technology, which is licensed from Zynaptiq GmbH. This technology is specifically designed for high-quality audio manipulation.

## Version history (last 5 releases)

### 1.6 — 2017-10-09

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

Update for iOS 11
Faster file processing

### 1.5 — 2014-02-19

Seek support added - User can now go to any part of the song with the new slider 

User interface optimized for iOS 7

Restore button added for users who have bought the in-app purchase to restore their purchase onto their new phones

### 1.4 — 2012-11-13

Added a "Back to Beginning" button

### 1.3.1 — 2012-05-25

Japanese Localization Added

### 1.3.0 — 2012-05-13

* App was previously crashing in devices running iOS 4. The issue is now fixed.

## Apps similar to Music Factory Lite

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Music Speed Changer-Transpose](https://appshunter.io/ios/app/music-speed-changer-transpose/id6447086413) | 4.5 (141) | Free | Music |
| [Nu-Music Player](https://appshunter.io/ios/app/nu-music-player/id982811087) | 4.2 (56) | Free | Music |
| [Hayaemon - Music Player](https://appshunter.io/ios/app/hayaemon-music-player/id717639970) | 4.8 (228) | Free | Music |
| [Pitch Shift / 31 EQ / AUv3](https://appshunter.io/ios/app/pitch-shift-31-eq-auv3/id670120398) | 4.4 (78) | Free | Music |
| [Music Suite - BPM, Pitch Shift](https://appshunter.io/ios/app/music-suite-bpm-pitch-shift/id6475732700) | 5.0 (2) | Free | Music |
| [Time Stretch / 31 EQ / AUv3](https://appshunter.io/ios/app/time-stretch-31-eq-auv3/id637376117) | 3.3 (18) | Free | Music |

## More apps by KBIC International Ltd

- [Music Factory -](https://appshunter.io/ios/app/music-factory/id509978677)
- [Vocal Remover](https://appshunter.io/ios/app/vocal-remover/id518520239)
- [Vocal Remover Lite](https://appshunter.io/ios/app/vocal-remover-lite/id518520396)
- [Pitch Changer](https://appshunter.io/ios/app/pitch-changer/id518521577)
- [Pitch Changer Lite](https://appshunter.io/ios/app/pitch-changer-lite/id518521836)

All apps by KBIC International Ltd: https://appshunter.io/developer/505094094

## Related topics

[kbic international ltd](https://appshunter.io/ios/topics/kbic-international-ltd)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*