Change My Voice App

I have come across an application called Change My Voice by Best Free Apps Intl on Google Play. This app lets you play around with a recording and change its attributes for example make the pitch lower or higher, or add echo and increase/decrease speed. I thought this may be useful as our script is fine but the narration is quite plain and dull which doesn't go very well with our genre. I want to use this app to make our narration a little deeper and maybe add an echo to it too.

Here is a video of me using the app and checking out its features. Adnan.