# 灵线 vs 轻羽云笔记

The clearest difference is device support: 轻羽云笔记 at 4 against 灵线's 2. 轻羽云笔记 also leads on iOS requirement (13.0 vs 18.6). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. 灵线 sells 2 in-app purchases, starting at $4.99 per month and 轻羽云笔记 sells 3 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, 轻羽云笔记 every 4 days. Both last shipped on October 31, 2026.

## The numbers

| Metric | 灵线 | 轻羽云笔记 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 4 days |
| Size | 28 MB | 64 MB |
| Requires iOS | 18.6 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 17+ |
| Developer | [Hefei Yi Qicheng Technology Co., Ltd.](https://appshunter.io/developer/1895580826) | [Jun Li](https://appshunter.io/developer/1190914894) |

## 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 |


### 轻羽云笔记

[App page](https://appshunter.io/ios/app/id6764479359)

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 轻羽云服务-月卡 | $0.99 | one-time |
| 轻羽云服务-半年卡 | $6.99 | one-time |
| 轻羽云服务-年卡 | $9.99 | one-time |


## Frequently asked questions

### Is 灵线 free?

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

### Is 轻羽云笔记 free?

轻羽云笔记 is free to download, with in-app purchases available.

### Do 灵线 or 轻羽云笔记 have ads?

Neither 灵线 nor 轻羽云笔记 shows ads.

### Which is updated more often, 灵线 or 轻羽云笔记?

灵线 ships an update every 3 days, and 轻羽云笔记 every 4 days. Most recently, 灵线 was updated on October 31, 2026 and 轻羽云笔记 on October 31, 2026.

---

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