# 积墨投屏 vs 券易用

The clearest difference is in-app purchases: 积墨投屏 at none against 券易用's 3. 积墨投屏 also leads on iOS requirement (13.0 vs 17.0). 券易用's advantage is update cadence (every 3 days vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. 券易用 sells 3 in-app purchases, starting at $0.99 per month. 积墨投屏 asks for nothing beyond the download.

积墨投屏 ships an update every 3 months, 券易用 every 3 days. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | 积墨投屏 | 券易用 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 days** |
| Size | 48 MB | 7 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hangzhou Small Fire Network Technology Co., Ltd.](https://appshunter.io/developer/1106805320) | [WAN HOU KOU](https://appshunter.io/developer/1895367325) |

## What reviewers say

### 积墨投屏

[App page](https://appshunter.io/ios/app/id6448000400)

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

**In-app purchases:** none


### 券易用

[App page](https://appshunter.io/ios/app/id6763545720)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $0.99 | per month |
| Annual Membership | $3.99 | per year |
| Permanent member | $6.99 | one-time |


## Frequently asked questions

### Is 积墨投屏 free?

积墨投屏 is free to download, with no in-app purchases.

### Is 券易用 free?

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

### Do 积墨投屏 or 券易用 have ads?

Neither 积墨投屏 nor 券易用 shows ads.

### Which is updated more often, 积墨投屏 or 券易用?

积墨投屏 ships an update every 3 months, and 券易用 every 3 days. Most recently, 积墨投屏 was updated on November 3, 2026 and 券易用 on November 5, 2026.

---

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