# Question and Answer vs FreeBuf知识大陆

The clearest difference is in-app purchases: Question and Answer at none against FreeBuf知识大陆's 12. Question and Answer also leads on iOS requirement (13.0 vs 15.0). FreeBuf知识大陆's advantage is ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. FreeBuf知识大陆 sells 12 one-off in-app purchases. Question and Answer asks for nothing beyond the download.

Question and Answer ships an update every 2 weeks, FreeBuf知识大陆 every 8 days. The most recent releases landed on March 3, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Question and Answer | FreeBuf知识大陆 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (1 ratings)](https://appshunter.io/ios/app/freebuf/id6444119616/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Every 8 days** |
| Monetization | — | Free with in-app purchases |
| Size | 35 MB | 126 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Md Mahmudul Hasan](https://appshunter.io/developer/1053820339) | [上海斗象信息科技有限公司](https://appshunter.io/developer/1652462918) |

## What reviewers say

### Question and Answer

[App page](https://appshunter.io/ios/app/question-and-answer/id1484200260)

**Features:** macOS Compatibility

**In-app purchases:** none


### FreeBuf知识大陆

[App page](https://appshunter.io/ios/app/freebuf/id6444119616)

A private content platform for cybersecurity knowledge sharing and inspiration capture. It connects experts in various network security fields for in-depth discussions and sharing of achievements within dedicated spaces.

**Highlights:** Knowledge sharing platform, Inspiration capture, Private content spaces, Expert community, Cybersecurity focus

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

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1帮会币 | $0.99 | one-time |
| 6帮会币 | $0.99 | one-time |
| 7帮会币 | $0.99 | one-time |
| 14帮会币 | $2.99 | one-time |
| 28帮会币 | $3.99 | one-time |
| 35帮会币 | $6.99 | one-time |
| 56帮会币 | $11.99 | one-time |
| 70帮会币 | $14.99 | one-time |
| 198帮会币 | $29.99 | one-time |
| 140帮会币 | $29.99 | one-time |
| 298帮会币 | $46.99 | one-time |
| 398帮会币 | $59.99 | one-time |


## Frequently asked questions

### Is Question and Answer free?

Question and Answer is free to download, with no in-app purchases.

### Is FreeBuf知识大陆 free?

FreeBuf知识大陆 is free to download, with in-app purchases available.

### Do Question and Answer or FreeBuf知识大陆 have ads?

Question and Answer shows ads; FreeBuf知识大陆 does not.

### Which is updated more often, Question and Answer or FreeBuf知识大陆?

Question and Answer ships an update every 2 weeks, and FreeBuf知识大陆 every 8 days. Most recently, Question and Answer was updated on March 3, 2026 and FreeBuf知识大陆 on September 23, 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.*