Voice communication for the deaf and dumb

Our application is designed to promote the socialization of deaf and dumb people with the world around them. For the convenience of everyday use of the application, we have implemented such functions as:
Quick phrases - instantly respond to the interlocutor with a pre-written sentence
Keywords - in order not to miss something important, add a few words so that when they meet in the interlocutor's sentence, the phone vibrates
Support for many languages ​​- change the language to adapt the application to foreign speech
Choice of female or male voice acting
And many more useful features!