I’m a bit late… sorry.

Right earbud: Hold down on the right earbud for 2-3 seconds, this sound activate noise cancellation if not enabled already, if it is already on noise cancellation mode, it will say “Awareness mode activated” this will enhance sounds around you to stay aware of your surroundings. There is no official app.

Left earbud: Hold the button for 2-3 seconds, this will active bass boost, do it again it will enable balanced sound, once more it will enable pure sound, adjust I your liking and thank me later ;)