I Made this app in a Day, How can i market it & Feedbacks

So i had some free time from my work and decided to take up a pet project.

Here is the link: https://play.google.com/store/apps/details?id=ringtone.mp3.song.download

Its basically an app that allows you download songs from tik tok.

I am an avid fan of the tik tok app, i use it most of the time to watch exciting videos. I come across exciting audio songs that i wish to save, but tik tok only allows you download videos and not audio.

I opened my android studio ide and decided to develop an app that allows you download audio of your choice on the tik tok app.

Kindly check it out and i would gladly accept your feedbacks and ways i could promote it.

Thanks