# 現代普通話聲、韻母發音動畫 vs Sobo Math

The clearest difference is in-app purchases: 現代普通話聲、韻母發音動畫 at none against Sobo Math's 2. 現代普通話聲、韻母發音動畫 also leads on iOS requirement (11.0 vs 15.0). Sobo Math's advantage is update cadence (every 3 days vs every 38 months). On price, ads and device support there is nothing between them.

Both are free to download. Sobo Math sells 2 in-app purchases, starting at $9.99 per month. 現代普通話聲、韻母發音動畫 asks for nothing beyond the download.

現代普通話聲、韻母發音動畫 ships an update every 38 months, Sobo Math every 3 days. The most recent releases landed on October 10, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | 現代普通話聲、韻母發音動畫 | Sobo Math |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 38 months | **Every 3 days** |
| Size | 82 MB | 28 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Modern Educational Research Society, LTD](https://appshunter.io/developer/432268704) | [kwok wai yeung](https://appshunter.io/developer/1887192726) |

## What reviewers say

### 現代普通話聲、韻母發音動畫

[App page](https://appshunter.io/ios/app/id472601183)

**Features:** macOS Compatibility

**In-app purchases:** none


### Sobo Math

[App page](https://appshunter.io/ios/app/sobo-math/id6785965928)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 小學數學大冒險 | $9.99 | per month |
| PRO Yearly | $69.99 | per year |


## Frequently asked questions

### Is 現代普通話聲、韻母發音動畫 free?

現代普通話聲、韻母發音動畫 is free to download, with no in-app purchases.

### Is Sobo Math free?

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

### Do 現代普通話聲、韻母發音動畫 or Sobo Math have ads?

Neither 現代普通話聲、韻母發音動畫 nor Sobo Math shows ads.

### Which is updated more often, 現代普通話聲、韻母發音動畫 or Sobo Math?

現代普通話聲、韻母發音動畫 ships an update every 38 months, and Sobo Math every 3 days. Most recently, 現代普通話聲、韻母發音動畫 was updated on October 10, 2026 and Sobo Math on October 7, 2026.

---

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