The "Учить французский язык с нуля" app by RayhonSoft is an Android-based educational app that offers a comprehensive guide to learning French. It is an entirely free app that provides users with a vast array of features, including grammar lessons, French tests, French-Russian and Russian-French dictionaries with pronunciation, French dialogues with translations and audio, French reading texts, and French topics with translations.

The app is designed to help beginners learn French from scratch, starting with the basics of grammar. The app's grammar lessons are easy to understand and are arranged in increasing order of difficulty. This app is perfect for anyone looking to learn French in a fun and interactive way. However, it is essential to note that the app does not offer any contact information for the developer or any way to give feedback or suggestions.