Communication with deaf and hard of hearing people is done by recording the speech and translating it into written text that can be read.
So a deaf person can ask their conversation partner to use the app to read the spoken text.
An aid that visitors, caregivers, doctors, pharmacists, children, grandchildren, etc. can use to 'talk' to the hard of hearing person again.
The app is free as a Free version and without advertising.
The Pro version has an extended range of functions.