# 学习有方法 vs 灵线

The clearest difference is iOS requirement: 学习有方法 at 15.1 against 灵线's 18.6. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 学习有方法 sells 4 one-off in-app purchases and 灵线 sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | 学习有方法 | 灵线 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | — | Every 3 days |
| Size | 60 MB | 28 MB |
| Requires iOS | **15.1** | 18.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Nanjing Dark Matter Tech Co., Ltd.](https://appshunter.io/developer/1885416455) | [Hefei Yi Qicheng Technology Co., Ltd.](https://appshunter.io/developer/1895580826) |

## What reviewers say

### 学习有方法

[App page](https://appshunter.io/ios/app/id6763182433)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Points | $4.99 | one-time |
| Points | $9.99 | one-time |
| Points | $12.99 | one-time |
| Points | $24.99 | one-time |


### 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 |


## Frequently asked questions

### Is 学习有方法 free?

学习有方法 is free to download, with in-app purchases available.

### Is 灵线 free?

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

### Do 学习有方法 or 灵线 have ads?

Neither 学习有方法 nor 灵线 shows ads.

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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.*