# Unit Gacha ! — Know Units, Know Physics

> Know Units, Know Physics (iPhone/iPad app by Shunsuke Nakamura.)

- Source: https://appshunter.io/ios/app/unit-gacha/id6756411322 (this page in markdown: same URL + `.md`)
- Developer: [Shunsuke Nakamura](https://appshunter.io/developer/1828229182)
- Category: Education
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 13.0 · 47 MB
- Languages: English, Japanese
- Released: 2026-01-05
- Data updated: 2026-06-19
- User reviews in markdown: https://appshunter.io/ios/app/unit-gacha/id6756411322/reviews.md

## What is Unit Gacha !?

◆ Learn Physics Units with a Fun Gacha System
Physics Units Gacha lets you practice unit breakdown, unit conversions, and fundamental physical quantities through randomly generated problems.
Just tap to get a new question and continue learning at your own pace.

◆ Covers Essential Physics Units
Practice and review a wide range of physics units:
Mechanics (force, energy, momentum, pressure)
Electricity & magnetism (voltage, resistance, charge, field strength)
Waves & thermodynamics
Derived units
SI base units & physical constants
Designed for students who want to study physics through units.

◆ Focused Explanations Where Needed
Some problems include short explanations that show how units are derived from formulas.

◆ Random Practice
Questions are generated randomly, allowing you to encounter various unit patterns and practice repeatedly.

◆ Simple Learning Features
In-app scratch paper
Learning progress is saved locally, and can be synchronized to the cloud when you sign in.
Suitable for both quick review and focused practice sessions.

◆ For High-School Physics & Introductory University Courses
A learning app designed to support the study of physics units for exams and fundamental review.

◆ Free to Use (Optional Paid Content)
Approximately 70 problems are available for free
Additional problem sets are available as optional paid upgrades

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Unlock all mechanics problems | $5.99 | one-time |
| Unlock all electromagnetic problems | $5.99 | one-time |



## Version history (last 5 releases)

### 3.3.4 — 2026-05-26

fixed the bug of learning history registration.

### 3.3.3 — 2026-04-22

Submitted for review; improvements

### 3.3.1 — 2026-02-06

Added problems.

### 1.2.0 — 2026-01-15

Changed devices other than those set to Japanese to support English.

### 1.1.0 — 2026-01-08

Fixed purchase display and bugs.

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## More apps by Shunsuke Nakamura

- [Calculus Gacha！](https://appshunter.io/ios/app/calculus-gacha/id6753078774)

All apps by Shunsuke Nakamura: https://appshunter.io/developer/1828229182

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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 2026-06-19.*