Matros Kvalifitsirovanny Free is an Android app developed by Progressiv Digital Inc. that offers an introductory guide to seamanship. The app covers topics such as vessel structure, watchkeeping, navigation, meteorology, and marine practice. However, the information provided is not complete, and some sections are only available in the paid version of the app. The free version is intended for informational purposes only and is not a substitute for professional training.

The app's interface is user-friendly, with straightforward navigation and a simple design. The app's content is presented in text format, with some illustrations and diagrams to aid understanding. The app is available for free, but users can purchase the full version if they find the introductory guide helpful. Overall, Matros Kvalifitsirovanny Free is a useful app for those interested in learning the basics of seamanship, but it should not be relied upon as the sole source of information.