add a compressor/limiter to improve the audibility of recor…

there are many tools that can do this & idk how your backend works but specifically what would occur to me is to use the compander in SoX, Sound eXchange, an open source linux command line sound effects suite

hhhmmm... interesting thinking.... to have as many (editing) tools within the one platform... to keep people IN the space rather than having to go out and search to make the best quality communications.... hhhmmmm, yeah.
I use canva.com for my artwork and I think this is why they are growing extremely fast, they're taking the most useful aspects of graphic design software and make it extremely easy for people to use without leaving their site.
I'm currently looking for part time work as a virtual assistant and am noticing more companies adding canva to their must-have's for job requirements. A year ago nobody had heard of them.