AP Score Estimator vs Three

AP Score Calculator is a simple and convenient educational tool designed to help students estimate their AP exam performance and track their progress. Enter your practice performance and get an estimated AP score on the 1–5 scale. Save your results, set a target score, and review your progress whenever you need. Key Features: AP Score Calculator- Estimate your AP exam score based on your practice performance. Multiple AP Subjects- Choose from supported AP subjects and use the appropriate calculation method for each exam. Practice Performance- Enter your multiple-choice and free-response performance where applicable. Target Score- Set a target AP score and compare it with your estimated result. Score History- Save previous calculations and track your performance over time. Share Results- Share your estimated AP score and performance with friends, parents, teachers, or counselors. Export PDF- Create a clean PDF report of your AP score calculation. Light & Dark Mode- Choose the interface appearance you prefer. Simple & Student-Friendly Designed with a clean, fast, and easy-to-use interface for students. Whether you're preparing for an AP exam, taking practice tests, checking your progress, or working toward a specific AP score, AP Score Calculator gives you a convenient way to estimate and track your performance. Important Disclaimer: AP Score Calculator provides estimated results for educational and practice purposes only. It does not provide official AP scores and is not affiliated with, endorsed by, or sponsored by College Board. AP scoring methods and exam formats may vary by subject and exam year. Estimated results may differ from your actual AP score. Always refer to official College Board information for current AP exam policies, scoring, and requirements.

Three bodies. Countless paths. Watch the beauty of gravity unfold. Three-Body Simulation brings abstract celestial motion into a world of orbits you can watch, interact with, and explore. See three bodies pull on one another as their trails gradually draw patterns, and discover how a simple law of gravity produces rich and fascinating motion. Explore 16 classic periodic solutions From the flowing Figure Eight to Butterfly, Moth, and Bumblebee, discover the shapes and rhythms of different periodic solutions. Detailed introductions to each orbit explain the motion behind these patterns. Discover 10,059 three-dimensional periodic orbits Explore published spatial periodic solutions and discover paths that weave and curve through space. Choose an orbit by number or discover one at random, then rotate the view to see its shape from different directions. Try your own gravity experiment Adjust the mass, initial position, and velocity of each body and watch how the orbit changes. You can also explore random three-body motion to see how the bodies approach, circle, and move away from one another. Turn curiosity into understanding Learn about the origins, history, and basic principles of the three-body problem. See the full system of three equations of motion, explore classic periodic solutions, and learn how the 10,059 spatial periodic orbits were discovered. Let the paths you see become a starting point for understanding gravity and motion. Available on iPhone and iPad in ten languages, including Chinese, English, and Japanese. Orbit data, simulations, and introductions are included in the app, so the core exploration experience works offline. The complete orbit catalog, random motion, and custom experiments are unlocked with a one-time in-app purchase.