The Document Talker for Android is a free speech-to-text program. It is compatible with most Android devices, including tablets. It uses the built-in microphone to detect voice and convert it to text. 

With this app, you can use your smartphone or tablet as a microphone.

You can also set it as a keyboard.

It has a speech-to-text function that allows you to speak and convert your speech to text. It also has an English dictionary, so you can look up words.

It supports many languages, including English, French, Spanish, German, Japanese, Russian, Arabic, and Chinese.

You can set the speech-to-text program to speak in a language you want.