# Dr.Mathe — Arithmetic Operations Trainer

> Arithmetic Operations Trainer (iPhone/iPad app by Dong Hyun Park.)

- Source: https://appshunter.io/ios/app/drmathe/id1470190193 (this page in markdown: same URL + `.md`)
- Developer: [Dong Hyun Park](https://appshunter.io/developer/1440080899)
- Category: Education
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 9.0 · 110 MB
- Languages: American English, Japanese, Korean, Chinese (Simplified, China), Chinese (Traditional, Taiwan)
- Released: 2019-07-21
- Data updated: 2025-01-09
- User reviews in markdown: https://appshunter.io/ios/app/drmathe/id1470190193/reviews.md

## What is Dr.Mathe?

Arithmetic operations trainer app for elementary school student.

4 main operations - addition, subtraction, multiplication and division with up to 3-digit numbers..

“Assist mode” for beginner and “Normal Input mode” for experts are available.

Simple grading system.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Buy 2 Operations | $0.99 | one-time |
| Buy 3 Operations | $1.99 | one-time |
| Buy Additions | $0.99 | one-time |
| Buy All Operations | $2.99 | one-time |
| Buy Divisions | $0.99 | one-time |
| Buy Multiplications | $0.99 | one-time |
| Buy Subtractions | $0.99 | one-time |



## Version history (last 4 releases)

### 1.5.2 — 2021-07-09

1. Improvement of Fonts and Design
2. Introduced a new evaluation method.
3. Bugs fixes

### 1.2 — 2020-08-03

SNS communication now available.
New fonts.

Minor bug fixes.

### 1.1 — 2019-07-15

Minor bug fixes.

### 1.0 — 2019-07-13

No release notes.

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## More apps by Dong Hyun Park

- [Infinite Wave](https://appshunter.io/ios/app/infinite-wave/id1440080900)
- [Dr.Mathe2](https://appshunter.io/ios/app/drmathe2/id1523220612)
- [Shop-ping](https://appshunter.io/ios/app/shop/id1534719106)
- [Shop-ping Lite](https://appshunter.io/ios/app/shop/id1535099353)
- [Beats Maker](https://appshunter.io/ios/app/beats-maker/id1574034297)

All apps by Dong Hyun Park: https://appshunter.io/developer/1440080899

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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 2025-01-09.*