# 认识天文知识 vs 天奥通

The clearest difference is update cadence: 天奥通 at every 3 weeks against 认识天文知识's every 27 months. 认识天文知识's advantage is iOS requirement (10.1 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

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

认识天文知识 ships an update every 27 months, 天奥通 every 3 weeks. The most recent releases landed on October 26, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | 认识天文知识 | 天奥通 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 27 months | **Every 3 weeks** |
| Size | 33 MB | 15 MB |
| Requires iOS | **10.1** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [运涛 余](https://appshunter.io/developer/977049266) | [四川汉星航通科技有限公司](https://appshunter.io/developer/1676750957) |

## What reviewers say

### 认识天文知识

[App page](https://appshunter.io/ios/app/id698569503)

**Features:** macOS Compatibility

**In-app purchases:** none


### 天奥通

[App page](https://appshunter.io/ios/app/id6740943362)

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

**In-app purchases:** none


## Frequently asked questions

### Is 认识天文知识 free?

认识天文知识 is free to download, with no in-app purchases.

### Is 天奥通 free?

天奥通 is free to download, with no in-app purchases.

### Do 认识天文知识 or 天奥通 have ads?

Neither 认识天文知识 nor 天奥通 shows ads.

### Which is updated more often, 认识天文知识 or 天奥通?

认识天文知识 ships an update every 27 months, and 天奥通 every 3 weeks. Most recently, 认识天文知识 was updated on October 26, 2026 and 天奥通 on October 28, 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.*