Song Speed Changer - Slow Down 4+

Music notes & chords practice

Artem Popov

    • Free
    • Offers In-App Purchases



Introducing Music Speed & Pitch Changer, a versatile mobile application designed for practicing musicians and casual users who need a comprehensive tool to adjust the tempo, pitch, and various audio effects of their favorite tracks. This app serves as a pitch changer, slow downer, music transcriber, transposer and sound stretcher, all in one convenient package. You can also use the app to export modified audio files to various formats.

Main features:


Determine the key of a track and make necessary adjustments to match a specific instrument's tuning or create a unique sound. It is possible to change the pitch without changing the tempo of the song.


Change your track’s tempo - slow down music for easier learning or speed up songs for a faster pace, making the app versatile for various purposes. It is possible to change the speed without changing the pitch.


Select different sections of the track by placing markers, and slow them down or speed them up individually. Thanks to this feature, you can easily select and loop the desired fragment for practice.


Upload audio files and change their parameters such as tempo and pitch to make it easier to learn or practice your favorite songs.


Сhange the pitch of all the notes of a piece of music by a certain number of semitones up or down to adapt the piece of music to a particular instrument or voice, or to play a song in a different key.


Upload any audio file to work with the sound. The app supports all popular formats, such as MP3 and more.

Save the result in various formats. It is also possible to save both the entire track and the selected loop.


The app's intuitive design makes it easy for musicians and casual users alike to manipulate and perfect their tracks. We have made a convenient playlist with projects so that they do not get lost, and so that you always have quick access to them.

Our app provides a comprehensive audio manipulation tool for users looking to enhance their musical experience, improve their skills, or simply enjoy their favorite tunes in a new way. Transform your mobile device into a powerful and user-friendly platform for perfecting your tracks and for practicing and learning musical compositions.


• Subscription's length is 1 month. It grants access to all features of the application.
• You can turn off the auto-renewal at any time. You can change your payment plan in the Settings of your iTunes and App Store account.
• The first time you have 3 days free trial. After that, your account will be automatically charged for the subscription if you will not stop it before the end of the free trial.
• Subscription automatically renews every month. Withdrawal of funds for each subsequent month occurs on the same date.
• Any unused portion of a free trial period will be forfeited when you purchase a subscription, where applicable.

Important: Before subscribing, please read Terms of Use and Privacy Policy
Terms of Use
Privacy Policy

What’s New

Version 2.2.2

Dear friends! We have prepared an update:

- Minor fixes and improvements

We are waiting for your feedback and suggestions!


Slow down,speed up song,video
Slow down,speed up song,video
All audio effects, features, unlimited tracks
Free Trial

App Privacy

The developer, Artem Popov, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer's privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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