If you are looking for speech to text app then you are in the right way, Voice to text app it's a android app can help you to convert your speech to text very easily.
To convert your voice to text just click on start bouton and say your words and thats it's your words will be converted to text.
You have also the possibilty to edit the text result or copying it by clicking on copy icon in the toolbar.
Important: You have to be connected to the internet to use the voice to text app.