# 灵线 vs 兽牙语记

The clearest difference is update cadence: 灵线 at every 3 days against 兽牙语记's monthly. 兽牙语记's advantage is iOS requirement (15.0 vs 18.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 灵线 sells 2 in-app purchases, starting at $4.99 per month and 兽牙语记 sells 6 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

灵线 ships an update every 3 days, 兽牙语记 monthly. Both last shipped on October 31, 2026.

## The numbers

| Metric | 灵线 | 兽牙语记 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Monthly |
| Size | 28 MB | 53 MB |
| Requires iOS | 18.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hefei Yi Qicheng Technology Co., Ltd.](https://appshunter.io/developer/1895580826) | [厦门云知芯智能科技有限公司](https://appshunter.io/developer/1888683415) |

## What reviewers say

### 灵线

[App page](https://appshunter.io/ios/app/pdfai/id6763971571)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月度订阅 | $4.99 | per month |
| 年度订阅 | $39.99 | per year |


### 兽牙语记

[App page](https://appshunter.io/ios/app/id6776087756)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 专业版会员（30天） | $3.99 | one-time |
| 尊享版会员（30天） | $9.99 | one-time |
| 专业版会员提前续费（12个月） | $29.99 | one-time |
| 专业版会员（12个月） | $39.99 | one-time |
| 尊享版会员提前续费（12个月） | $89.99 | one-time |
| 尊享版会员（12个月） | $99.99 | one-time |


## Frequently asked questions

### Is 灵线 free?

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

### Is 兽牙语记 free?

兽牙语记 is free to download, with in-app purchases available.

### Do 灵线 or 兽牙语记 have ads?

Neither 灵线 nor 兽牙语记 shows ads.

### Which is updated more often, 灵线 or 兽牙语记?

灵线 ships an update every 3 days, and 兽牙语记 monthly. Most recently, 灵线 was updated on October 31, 2026 and 兽牙语记 on October 31, 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.*