Unit Master - Trivia & Facts

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