App Name: HelloTalk [Android App]

Cost: Free

Developer: Hello Talk

App Market: Download Page

Description:

HelloTalk is an app which has over 1.3 million users worldwide and is similar to WhatsApp.

The app has such features as in-app translation, text-to-voice, voice-to-text, transliteration, and grammar correction. With HelloTalk, one can learn and practice a new language with native speakers.