# 数学口算HD vs 加减法

The clearest difference is ads: 数学口算HD at none against 加减法's shown. 数学口算HD also leads on iOS requirement (9.0 vs 13.0). 加减法's advantage is update cadence (monthly vs every 6 months). On price, in-app purchases and device support there is nothing between them.

Both are free to download. 数学口算HD sells 7 one-off in-app purchases and 加减法 sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

数学口算HD ships an update every 6 months, 加减法 monthly. The most recent releases landed on September 18, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | 数学口算HD | 加减法 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/hd/id1632726087/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 months | **Monthly** |
| Monetization | Free with in-app purchases | — |
| Size | 4 MB | 17 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [摇摇 章](https://appshunter.io/developer/1570032236) | [杭州家之馨电子商务有限公司](https://appshunter.io/developer/1641228139) |

## What reviewers say

### 数学口算HD

[App page](https://appshunter.io/ios/app/hd/id1632726087)

This app simulates paper-based math drills for elementary students, offering customizable practice tests, automatic grading, and detailed error analysis. It covers addition, subtraction, multiplication, division, decimals, and fractions for grades 1-6, with a large question bank and printable options.

**Highlights:** Simulated paper test experience, Customizable test generation, Automatic grading and error analysis, Printable practice sheets, Grade-level specific question bank, Handwriting practice area

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 一年级口算 | $2.99 | one-time |
| 二年级口算 | $2.99 | one-time |
| 三年级口算 | $2.99 | one-time |
| 四年级口算 | $2.99 | one-time |
| 五年级口算 | $2.99 | one-time |
| 六年级口算 | $2.99 | one-time |
| 数学口算至尊VIP | $4.99 | one-time |


### 加减法

[App page](https://appshunter.io/ios/app/id6449480332)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月度会员 | $4.99 | one-time |
| 半年会员 | $7.99 | one-time |
| 年度会员 | $11.99 | one-time |


## Frequently asked questions

### Is 数学口算HD free?

数学口算HD is free to download, with in-app purchases available.

### Is 加减法 free?

加减法 is free to download, with in-app purchases available.

### Do 数学口算HD or 加减法 have ads?

加减法 shows ads; 数学口算HD does not.

### Which is updated more often, 数学口算HD or 加减法?

数学口算HD ships an update every 6 months, and 加减法 monthly. Most recently, 数学口算HD was updated on September 18, 2026 and 加减法 on September 9, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*