I while back I took the PoodLL audio recorder and reworked it so that it would work in other places too, not just Moodle. That became an SDK that developers can, and do, now use to make their own audio recording services.
Just for fun I used my own SDK to create a free online voice recording site in wordpress. It is really simple. Just record and download. It works on any device and there is nothing to install. So without further adieu: