There are some cool apps on internet which can help people facing hearing problems. These apps are based on speech recognition and converting into text techniques. Here are some suggestion about these apps :

Deaf - hearing chat device D
Deaf – hearing chat device D
Deaf - hearing chat device D
Deaf – hearing chat device D
Deaf – Hearing chat device D :┬áThis is a very popular app for communication between deaf and hearing people. It uses two devices connected with bluetooth. Install Deaf- hearing chat device D application on the first device used by deaf person. After that install Deaf – hearing chat device H app on second device used by hearing person. when hearing person speak or type any message then second device converts the message in text and send it to the first device ( Device D ). User can also exchange text message between devices. Before buying the paid version of this app user can also try trial version of this app. App is available on Google Play.
Deaf Assistant :┬áThis app is also very helpful for deaf people. This app is a chatting application and it’s user interface is very easy and good looking. This app converts the speech into text so that deaf person can read that message and reply. User can change the background, font size and font color. It is available on Google Play.
Deaf Assistant
Deaf Assistant