# 孜孜 vs 空中美語APP+

The clearest difference is update cadence: 空中美語APP+ at every 2 weeks against 孜孜's every 2 months. 孜孜's advantage is iOS requirement (12.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 孜孜 sells 4 one-off in-app purchases and 空中美語APP+ sells 4 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

孜孜 ships an update every 2 months, 空中美語APP+ every 2 weeks. The most recent releases landed on October 6, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 孜孜 | 空中美語APP+ |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 11.1% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Size | 150 MB | 60 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 17+ |
| Developer | [NUAZURE Innovative Technology Co., Ltd](https://appshunter.io/developer/381468347) | [空中美語](https://appshunter.io/developer/1373172419) |

## What reviewers say

### 孜孜

[App page](https://appshunter.io/ios/app/id1577302232)

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| iGold 430 | $12.99 | one-time |
| iGold 630 | $19.99 | one-time |
| iGold 1230 | $39.99 | one-time |
| iGold 2490 | $79.99 | one-time |


### 空中美語APP+

[App page](https://appshunter.io/ios/app/app-plus/id6753041631)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 超值方案 | $2.99 | per month |
| AI方案 | $5.99 | per month |
| 年訂閱方案 | $29.99 | per year |
| 年訂閱AI+方案 | $59.99 | per year |


## Frequently asked questions

### Is 孜孜 free?

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

### Is 空中美語APP+ free?

空中美語APP+ is free to download, with in-app purchases available.

### Do 孜孜 or 空中美語APP+ have ads?

Neither 孜孜 nor 空中美語APP+ shows ads.

### Which is updated more often, 孜孜 or 空中美語APP+?

孜孜 ships an update every 2 months, and 空中美語APP+ every 2 weeks. Most recently, 孜孜 was updated on October 6, 2026 and 空中美語APP+ on October 24, 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.*