That would be fine for me, but file management is a bit confusing on Android and it isn’t immediately clear where stuff is saved, it might be a problem for others. Possibly just posting a tutorial would help?
Video costs a fortune in mobile data compared to audio. For me at least, idk if that affects people in different areas (who might only want to watch on wifi/have unlimited or cheap data/etc)
https://clyp.it/ : haven’t tried it - free version is limited to 360 minutes and requires account, but you can record directly to the website
https://vocaroo.com/ : recordings are saved for an unknown amount of time, they say potentially a few months, recording onsite doesn’t seem to be available on my phone due to unsupported plugin so it might just go back to “where tf does my phone save my recordings”
I just picked the top two google results so other people might know of better-suited options.