"USA States Capitals. 4 Type of Quiz Games" is an educational app developed by VANNALA MOBILE APPS PRIVATE LIMITED, available on the iPhone platform for free. This app offers a comprehensive study tool for learning about the 50 states and their capitals in the United States.

Users can explore detailed information about each state, including its flag, state animal, birds, major cities, points of interest, state abbreviation, border details, and an animated map in the form of flashcards. The app also features interactive quiz games that challenge users to match capitals with state images and vice versa. With engaging games like "Capital Match" and "State Image Memory," users can test and enhance their knowledge while having fun. Additionally, the app provides customization options in settings to control flashcards' behavior and background music, offering a personalized learning experience.