# 墨灵公文 vs CPU键盘大师

The clearest difference is in-app purchases: 墨灵公文 at none against CPU键盘大师's 3. 墨灵公文 also leads on ads (none vs shown) and device support (3 vs 1). CPU键盘大师's advantage is update cadence (every 2 days vs every 2 months). On price there is nothing between them.

Both are free to download. CPU键盘大师 sells 3 in-app purchases, starting at $6.99 per 7 days. 墨灵公文 asks for nothing beyond the download.

墨灵公文 ships an update every 2 months, CPU键盘大师 every 2 days. The most recent releases landed on September 7, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | 墨灵公文 | CPU键盘大师 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 2 days** |
| Size | 44 MB | 9 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [万豪 植](https://appshunter.io/developer/1807122640) | [云 杜](https://appshunter.io/developer/1612790631) |

## What reviewers say

### 墨灵公文

[App page](https://appshunter.io/ios/app/id6744343110)

**Features:** macOS Compatibility

**In-app purchases:** none


### CPU键盘大师

[App page](https://appshunter.io/ios/app/cpu/id6745684297)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Membership | $6.99 | per 7 days |
| Monthly Membership | $19.99 | per month |
| Annual Membership‌ | $39.99 | per year |


## Frequently asked questions

### Is 墨灵公文 free?

墨灵公文 is free to download, with no in-app purchases.

### Is CPU键盘大师 free?

CPU键盘大师 is free to download, with in-app purchases available.

### Do 墨灵公文 or CPU键盘大师 have ads?

CPU键盘大师 shows ads; 墨灵公文 does not.

### Which is updated more often, 墨灵公文 or CPU键盘大师?

墨灵公文 ships an update every 2 months, and CPU键盘大师 every 2 days. Most recently, 墨灵公文 was updated on September 7, 2026 and CPU键盘大师 on September 19, 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.*