A free app for Android, by creaDOit.

Textr – Voice Message to Text is a simple and useful application that helps you convert voice messages from your friends and family into text messages. Simply select a voice message in your messenger app and tap the share button. You will be able to send text messages to your friends. 

You can choose the languages that you want to translate into text. Currently, this application supports English, Afrikaans, Albanian, Arabic, Azerbaijani, Bengali, Bosnian, Bulgarian, Catalan, Central Khmer, Chinese, Croatian, Czech, Danish, Dutch, Estonian, Finnish, French, Georgian, German, Greek, Hausa, Hebrew, Hindi, and many more!