The app calculates gas purging volumes for domestic installers working on pipes up to 35mm or 1 1/4" and meters up to 16 m3/hr. It determines the required purge procedure type based on user inputs for pipe lengths and meter type.
A math game where users solve addition, subtraction, multiplication, and division problems within a 20-second time limit. Select symbols to input answers in a hatena box. Compete with friends for correct answers and track progress.
Allows users to select random items from predefined lists or custom lotteries. Adjust weights, prevent repetition, and generate random choices. Share results or save selections for future use.
