It works from version 4.0 up and expects Samsung phones which from manufacture completely removed this build-in service, but didn't limit for custom ROM rooted Samsung phone.
Listen how to read an inserted word, expression or text and give it a try yourself, it will check your pronunciation and tell you if you need more practice.
This app is a beta, more updates to come
★ Tiny file size
★ Few permissions
★ Camera LED Flash set to highest setting to provide the brightest flashlight experience