Study for exams with over 1000 practice questions. Take daily free quizzes. Review detailed explanations for each answer. Retake tests until correct. Track progress with exam history. Access offline without internet.
Take a -based to determine psychological preferences. Choose colors and answer questions to assess traits. Receive detailed analysis based on preferences and psychological states. Share results with others.
Learn Microeconomics concepts through 120 illustrated cards. Swipe through each card to study key ideas. Save favorite cards for quick review. Complete 120 quiz questions to test understanding. Track progress with built-in assessments.
Analyzes device motion using accelerometers and gyroscope. Displays time series data and frequency spectra via FFT. Supports external USB accelerometer. Applies Hamming window and removes DC bias. Tracks three-axis movement with 0.02g sensitivity.
Detect noise levels in real time and receive alerts when exceeds safe thresholds. Test hearing loss and measure noise in cars or buildings. Compare noise levels against standards. Play calming music to aid focus and relaxation.
Track test results over time with a personal history log. View detailed test instructions and progress guides. Share digital test records with others via email or messaging. Set reminders for testing schedules.