Volume on my iPhone seems to be lower

[OMartinO]

Some of my songs volume on my spotify playlists, seem to be rather low in terms of others. These songs are from my local files. The problem is that the volume on that song works perfectly on my computer, but lowers drastically on my iPhone spotify app.

If it is a simple way to edit the volume more in-depth, please leave a comment and help a brotha out! :^)