# Unit Master - Trivia & Facts — Measurement & Conversion Quiz

> Measurement & Conversion Quiz (iPhone/iPad app by SHOTA KATAYAMA.)

- Source: https://appshunter.io/ios/app/unit-master-trivia-and-facts/id6813861450 (this page in markdown: same URL + `.md`)
- Developer: [SHOTA KATAYAMA](https://appshunter.io/developer/1842262783)
- Category: Games, Trivia
- Price: $1.99
- Age rating: 4+
- Requires: iOS 18.5 · 2 MB
- Languages: American English, Japanese
- Released: 2026-09-23
- Data updated: 2026-10-11

## What is Unit Master?

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

## Is Unit Master safe?

Not enough ratings yet to assess Unit Master.

## Is Unit Master legit?

Unit Master - Trivia & Facts appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Unit Master is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0 — 2026-09-23

No release notes.

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All apps by SHOTA KATAYAMA: https://appshunter.io/developer/1842262783

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-11.*