たんいマスター 単位の雑学クイズ

Unit Master turns the world's units of measurement into a fun trivia and facts quiz for the whole family. Discover where the mile, the nautical knot, the Japanese shaku, the hectare, and dozens of other units came from — and test yourself with 280+ multiple-choice questions across 13 categories: length, weight, volume, area, speed, temperature, time, data, pressure, energy, astronomy, logarithmic scales (like the Richter scale and decibels), and quirky one-off units. FEATURES • 13 categories covering metric, imperial, nautical, Japanese traditional (shaku/kan/go), and scientific units • An Elementary level for units kids actually learn in school, plus an Advanced level for the trickier stuff • A dedicated "Conversion Only" quiz mode if you just want to practice converting between units • Every wrong answer explains what you actually picked, not just what was right • A separate Study tab lets you browse every unit's origin and a fun fact, with no quiz pressure • Track your best score per category • One-time purchase — no subscription, no ads, no account required Whether you're brushing up before a trip, helping with homework, or just enjoy trivia night, Unit Master is a lightweight way to learn something new about the units all around you. Content is compiled for entertainment and general-knowledge purposes; while we aim for accuracy, some origin stories and comparisons are simplified or debated. Please don't rely on it for anything that requires precise, verified figures. Questions or feedback? santamaru-app@gmail.com