From time to time I got the need to trim intros/outros or silence from downloaded audio files.
I’m currently using Super Sound, but I find it a little silly that one of the last closed source, filled with ads app I still have installed is for such a small functionality.
On desktop I use ffmpeg for pretty much anything, so if there is some wrapper for it over android it would be ideal.
As far as I’m concerned, this is the only correct answer. Audacity is the best software for audio editing.
I deleted the comment because I’m not sure it’s available as an Android app though.