ভয়স বল Voice Bangla is a free educational and reference app developed by Monirul Islam Prince for Android devices. It is designed to help users learn proper Bangla pronunciation through a series of classes. The app features ten classes that cover 149 pronunciation rules that are approved by the Bangla Academy.

Each class is presented in a sequential manner, making it easy to understand and follow. The app also includes voice recording and playback features, allowing users to practice their pronunciation and listen to their progress. Additionally, the app offers multiple recording formats, sample rates, and bitrates, making it versatile and user-friendly.

Other features of the app include background recording and playing, sharing recordings, and adding recordings to bookmarks. The app also offers multiple color themes, allowing users to customize the interface to their liking. Overall, ভয়স বল Voice Bangla is an excellent resource for anyone looking to improve their Bangla pronunciation.