Does anyone use a closed captions app?

I have hearing aids that help but am occasionally reminded how deaf I am when I attend meetings in large rooms when microphones aren’t in use. At work there is always someone dialing in remotely on meetings and Zoom has a great closed caption feature. Outside of work, it can be frustrating. I went to a local government meeting tonight as a citizen to know what was going on and no one used microphones and most speakers had their back towards me. Doing a quick check, the apps that I found on an internet search were all developed in China and India, so I would have to be convinced there aren’t security concerns. I don’t want all my conversations to be converted to advertisement opportunities tailored for me.