# 知识奥秘 vs 红料+

The clearest difference is in-app purchases: 红料+ at none against 知识奥秘's 5. 红料+ also leads on update cadence (every 9 days vs every 3 weeks). 知识奥秘's advantage is ads (none vs shown) and iOS requirement (13.0 vs 15.0). On price and device support there is nothing between them.

Both are free to download. 知识奥秘 sells 5 one-off in-app purchases. 红料+ asks for nothing beyond the download.

知识奥秘 ships an update every 3 weeks, 红料+ every 9 days. The most recent releases landed on September 28, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | 知识奥秘 | 红料+ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Every 9 days** |
| Size | 32 MB | 135 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 12+ |
| Developer | [Wuhan Qiangelan NetworkTechnology Co.](https://appshunter.io/developer/1814079210) | [Yantai Dingsheng Technology Information Co., Ltd](https://appshunter.io/developer/1879711037) |

## What reviewers say

### 知识奥秘

[App page](https://appshunter.io/ios/app/id6745940924)

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Information fee | $0.99 | one-time |
| 1 pieces | $0.99 | one-time |
| 10 pieces | $0.99 | one-time |
| 优惠卡 | $0.99 | one-time |
| 100 pieces | $14.99 | one-time |


### 红料+

[App page](https://appshunter.io/ios/app/plus/id6761294593)

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

**In-app purchases:** none


## Frequently asked questions

### Is 知识奥秘 free?

知识奥秘 is free to download, with in-app purchases available.

### Is 红料+ free?

红料+ is free to download, with no in-app purchases.

### Do 知识奥秘 or 红料+ have ads?

红料+ shows ads; 知识奥秘 does not.

### Which is updated more often, 知识奥秘 or 红料+?

知识奥秘 ships an update every 3 weeks, and 红料+ every 9 days. Most recently, 知识奥秘 was updated on September 28, 2026 and 红料+ on October 10, 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.*