A free program for Android, by Infyom Technologies.

Effectrum – Slow Fast motion is an app that allows you to edit videos from your gallery and publish them on the storage of your Android cell phones. It is a powerful story maker for sharing on social media platforms such as Facebook, Instagram, YouTube, Twitter, Telegram, Vimeo, and many more.

This app is very easy to use and the editing process is very simple. Just choose the video you want to edit and then select the speed you want to make it. After that, you will have the option to edit the audio.

The video you create can be saved in the storage of your Android cell phones or in the SD card of your computer.