Capitals World is a free Android app developed by Krzysztof Osiak that offers a comprehensive database of over 200 country capitals, states, and flags. The app is an excellent tool for learning and testing your knowledge of global geography.

Capitals World offers three options for learning: Test, Learn, and Find. In the Test section, users can check their knowledge of country capitals and flags. Each time you run the test, the app randomizes the order of the questions, so you won't be memorizing answers in a set sequence. The Learn section is where users can explore all of the capitals, states, and flags in a convenient, organized format. The Find section enables users to search for a specific capital or country.

Overall, Capitals World is an excellent app for anyone looking to brush up on their global geography. With its extensive database of capitals, states, and flags, users can learn at their own pace or challenge themselves with the app's testing feature. Best of all, the app is completely free to use. So, download Capitals World today and start your journey towards becoming a geography expert!