# 数学口算HD vs Numi123

The clearest difference is update cadence: Numi123 at every 3 days against 数学口算HD's every 6 months. 数学口算HD's advantage is iOS requirement (9.0 vs 15.0). On price, ads, 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 Numi123 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

数学口算HD ships an update every 6 months, Numi123 every 3 days. The most recent releases landed on November 7, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | 数学口算HD | Numi123 |
| --- | --- | --- |
| 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 | No |
| Update frequency | Every 6 months | **Every 3 days** |
| Monetization | Free with in-app purchases | — |
| Size | 4 MB | 13 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [摇摇 章](https://appshunter.io/developer/1570032236) | [Nexus AI Studio](https://appshunter.io/developer/6799505015) |

## 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 |


### Numi123

[App page](https://appshunter.io/ios/app/numi123/id6799505012)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Access | $9.99 | 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 Numi123 free?

Numi123 is free to download, with in-app purchases available.

### Do 数学口算HD or Numi123 have ads?

Neither 数学口算HD nor Numi123 shows ads.

### Which is updated more often, 数学口算HD or Numi123?

数学口算HD ships an update every 6 months, and Numi123 every 3 days. Most recently, 数学口算HD was updated on November 7, 2026 and Numi123 on November 6, 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.*