The app you're describing is a comprehensive tool for learning about famous individuals from various fields and eras. Here's a detailed look at the notable figures included in the app, organized by the levels and categories you mentioned:

Level 1: Well-Known Figures

• Julius Caesar: Roman military general and statesman who played a critical role in the events that led to the demise of the Roman Republic and the rise of the Roman Empire.
• Alfred Hitchcock: Legendary British filmmaker known as the "Master of Suspense" for his work in thriller and horror genres.

Level 2: Harder to Identify Heroes

• Blaise Pascal: French mathematician, physicist, inventor, philosopher, and Catholic writer, known for his work on probability theory and the development of the first digital calculator.
• Igor Sikorsky: Russian-American aviation pioneer in both helicopters and fixed-wing aircraft, best known for his development of the first successful helicopter.

Professional Levels:

Writers

• William Shakespeare: English playwright and poet, widely regarded as the greatest writer in the English language.
• Leo Tolstoy: Russian writer, considered one of the greatest authors of all time, known for works like "War and Peace" and "Anna Karenina".

Composers

• Johann Sebastian Bach: German composer and musician of the Baroque period, known for his intricate and expressive musical compositions.
• Leonard Bernstein: American composer, conductor, author, music lecturer, and pianist, known for his work in both classical and popular music.

Painters and Paintings

• Michelangelo: Italian sculptor, painter, architect, and poet of the High Renaissance, famous for works like the Sistine Chapel ceiling and the statue of David.
• Georgia O'Keeffe: American artist known for her paintings of enlarged flowers, New York skyscrapers, and New Mexico landscapes.

Scientists

• Isaac Newton: English mathematician, physicist, astronomer, and theologian, known for his laws of motion and universal gravitation.
• Charles Darwin: English naturalist, geologist, and biologist, best known for his contributions to the science of evolution.

Additional Notable Figures Mentioned:

• Alexander the Great: King of Macedonia who created one of the largest empires in ancient history.
• Benjamin Franklin: American polymath and one of the Founding Fathers of the United States.
• Joan of Arc: French heroine and Roman Catholic saint who played a significant role during the Hundred Years' War.
• Fred Astaire: American dancer, singer, actor, choreographer, and television presenter, known for his work in musical films.
• Louis Armstrong: American jazz trumpeter, singer, and one of the most influential figures in jazz music.
• Winston Churchill: British statesman, army officer, and writer who served as Prime Minister of the United Kingdom during World War II.
• Thomas Edison: American inventor and businessman who developed many devices such as the electric light bulb and phonograph.
• Ernest Hemingway: American novelist, short story writer, and journalist, known for works like "The Old Man and the Sea" and "A Farewell to Arms".

The app also includes various game modes and learning tools to enhance the user's experience and knowledge about these famous individuals. With its wide range of languages and continuous updates, it's a valuable resource for anyone interested in world history and culture.