The goal was to search for an alternative to mediate communication between people who are Deaf or Hard of Hearing (D/HH) and hearing individuals, in which the major motivation was to provide empowerment for D/HH students, using technology to provide them with more autonomy in inclusive classrooms. With that in mind, a systematic literature review was conducted to elucidate requirements for a mobile application that includes a Speech-To-Text (STT) system, as well as an opinion research accomplished with D/HH participants to know potential users' priorities among the elucidated requirements. As a result, the preference to communicate in Libras (Brazilian Sing Language) prevails, although users consider important to use a mobile application as the one proposed.