# 知金宝 vs 3DLink

The clearest difference is update cadence: 知金宝 at every 3 weeks against 3DLink's every 2 months. 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.

知金宝 ships an update every 3 weeks, 3DLink every 2 months. The most recent releases landed on May 16, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | 知金宝 | 3DLink |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Size | 71 MB | 127 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 9+ | 12+ |
| Developer | [Changsha ZhiNa Information Technology Co., Ltd.](https://appshunter.io/developer/1433383884) | [Shenzhen 3DVSTAR Display Technology Co., Ltd.](https://appshunter.io/developer/1442423873) |

## What reviewers say

### 知金宝

[App page](https://appshunter.io/ios/app/id1433383885)

**Features:** macOS Compatibility

**In-app purchases:** none


### 3DLink

[App page](https://appshunter.io/ios/app/3dlink/id1521976590)

**In-app purchases:** none


## Frequently asked questions

### Is 知金宝 free?

知金宝 is free to download, with no in-app purchases.

### Is 3DLink free?

3DLink is free to download, with no in-app purchases.

### Do 知金宝 or 3DLink have ads?

Neither 知金宝 nor 3DLink shows ads.

### Which is updated more often, 知金宝 or 3DLink?

知金宝 ships an update every 3 weeks, and 3DLink every 2 months. Most recently, 知金宝 was updated on May 16, 2026 and 3DLink on September 15, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*