It's an app that makes everyday conversations and surrounding sounds more accessible among people who are deaf and hard of hearing, using just your phone, and you can copy the text for transcribe.

Voice to text is a simple speech to text app, that provides continuous and unlimited speech recognition.Voice to text app is the easiest way to type your voice messages to text.You can create long notes, reports, dictations, essays, posts.

Wahst is TTS:
Text-to-speech (TTS) is a type of assistive technology that reads digital text aloud. It's sometimes called “read aloud” technology. With a click of a button or the touch of a finger, TTS can take words on a computer or other digital device and convert them into audio.

What is STT:
Speech recognition is an interdisciplinary subfield of computer science and computational linguistics that develops methodologies and technologies that enable the recognition and translation of spoken language into text by computers. It is also known as automatic speech recognition (ASR), computer speech recognition or speech to text (STT). It incorporates knowledge and research in the computer science, linguistics and computer engineering fields.