# 普通話正讀老師版 vs Tra.Sim (Util)

The clearest difference is ads: 普通話正讀老師版 at none against Tra.Sim (Util)'s shown. Tra.Sim (Util)'s advantage is update cadence (monthly vs every 11 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

普通話正讀老師版 ships an update every 11 months, Tra.Sim (Util) monthly. The most recent releases landed on October 29, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | 普通話正讀老師版 | Tra.Sim (Util) |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 11 months | **Monthly** |
| Size | 80 MB | 126 MB |
| Requires iOS | 11.0 | 11.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [The Commercial Press (H.K.) Ltd.](https://appshunter.io/developer/380669798) | [Wanchun Zhang](https://appshunter.io/developer/1527439315) |

## What reviewers say

### 普通話正讀老師版

[App page](https://appshunter.io/ios/app/id1448796087)

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

**In-app purchases:** none


### Tra.Sim (Util)

[App page](https://appshunter.io/ios/app/trasim-util/id1527439313)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 普通話正讀老師版 free?

普通話正讀老師版 is free to download, with no in-app purchases.

### Is Tra.Sim (Util) free?

Tra.Sim (Util) is free to download, with no in-app purchases.

### Do 普通話正讀老師版 or Tra.Sim (Util) have ads?

Tra.Sim (Util) shows ads; 普通話正讀老師版 does not.

### Which is updated more often, 普通話正讀老師版 or Tra.Sim (Util)?

普通話正讀老師版 ships an update every 11 months, and Tra.Sim (Util) monthly. Most recently, 普通話正讀老師版 was updated on October 29, 2026 and Tra.Sim (Util) on November 3, 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.*