# 石材链 vs 知答

The clearest difference is iOS requirement: 石材链 at 12.0 against 知答's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. 石材链 sells 3 one-off in-app purchases and 知答 sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

石材链 ships an update every 11 days, 知答 weekly. The most recent releases landed on September 23, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | 石材链 | 知答 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 11 days | **Weekly** |
| Size | 71 MB | 77 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [济南全石界网络科技有限公司](https://appshunter.io/developer/1588209019) | [晓生 唐](https://appshunter.io/developer/1680679241) |

## What reviewers say

### 石材链

[App page](https://appshunter.io/ios/app/id6736739155)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 会员月付款 | $3.99 | one-time |
| 会员季付 | $9.99 | one-time |
| 会员年付 | $39.99 | one-time |


### 知答

[App page](https://appshunter.io/ios/app/ai-agent/id6739323442)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 购买60个知豆 | $0.99 | one-time |
| 购买180个知豆 | $2.99 | one-time |
| 购买300个知豆 | $3.99 | one-time |
| 购买1680个知豆 | $24.99 | one-time |


## Frequently asked questions

### Is 石材链 free?

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

### Is 知答 free?

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

### Do 石材链 or 知答 have ads?

Neither 石材链 nor 知答 shows ads.

### Which is updated more often, 石材链 or 知答?

石材链 ships an update every 11 days, and 知答 weekly. Most recently, 石材链 was updated on September 23, 2026 and 知答 on September 11, 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.*