Księga Imion i Znaczeń is a free mobile application developed by Mobiem. The application falls under the category of Lifestyle and offers a comprehensive database of over 1,600 Polish names of both male and female genders. The app helps users discover the true meaning of the most popular and less well-known names, their origin, and name-date. This application is specifically designed to help parents choose a suitable name for their newborns.

The app has a user-friendly interface that makes it easy to navigate. It allows users to check the meaning of the name, name-check the date, and find out the origin of the name. The app also provides suggestions for names for babies. The app is recommended for all pregnant mothers who are looking for a suitable name for their baby.