# SkyPen vs penX

SkyPen and penX are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

SkyPen ships an update every 2 months, penX every 6 weeks. Both last shipped on October 10, 2026.

## The numbers

| Metric | SkyPen | penX |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Size | 34 MB | 33 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [招途 莫](https://appshunter.io/developer/1768523421) | [Shenzhen Xinyun Zhilian Technology Co., Ltd](https://appshunter.io/developer/1842688252) |

## What reviewers say

### SkyPen

[App page](https://appshunter.io/ios/app/skypen/id6743663942)

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

**In-app purchases:** none


### penX

[App page](https://appshunter.io/ios/app/penx/id6754246123)

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

**In-app purchases:** none


## Frequently asked questions

### Is SkyPen free?

SkyPen is free to download, with no in-app purchases.

### Is penX free?

penX is free to download, with no in-app purchases.

### Do SkyPen or penX have ads?

Neither SkyPen nor penX shows ads.

### Which is updated more often, SkyPen or penX?

SkyPen ships an update every 2 months, and penX every 6 weeks. Most recently, SkyPen was updated on October 10, 2026 and penX on October 10, 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.*