Guess a secret code of four colors. Receive feedback with black pins for correct color and position, and white pins for correct color in wrong position. Adjust colors in each row and track progress through multiple rounds.
Calculate standard deviation, probable error, and error of the mean for surveying and civil measurements. Switch between imperial and metric units. Perform calculations for series of observations and single or combined accidental errors.
The app allows students to create digital notebooks for school subjects. Users can handwrite notes, draw, and organize pages, with an option to convert handwriting to searchable text.
