T2S - T2S app offers features through which you can open a pdf file to listen to it in your favorite language without much of a stretch.
BoldVoice - Accent coaching app for non-native English speakers
@Voice Aloud Reader (TTS Reader) - @Voice Aloud Reader (TTS Reader) app provides features through which users can open text, pdf, doc, RTF, and various other files to listen to them in real-time.
Duolingo - Duolingo is a free language learning app for iOS, Windows and Android devices. The app makes learning a new language fun by breaking learning into small lessons where you can earn points and move up through the levels. Read more about Duolingo.
Text to Speech (MP3 download) - Text to Speech (MP3 download) app offers features that let you create files in mp3 format by entering files in the text format.
Andy Chatbot - Learn and practice English with exercises, grammar and games