# PenX vs penX

The clearest difference is in-app purchases: penX at none against PenX's 4. penX also leads on iOS requirement (12.0 vs 14.0). PenX's advantage is update cadence (every 2 days vs every 6 weeks). On price, ads and device support there is nothing between them.

Both are free to download. PenX sells 4 in-app purchases, starting at $4.99 per month. penX asks for nothing beyond the download.

PenX ships an update every 2 days, penX every 6 weeks. The most recent releases landed on September 11, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | PenX | penX |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 6 weeks |
| Size | 34 MB | 33 MB |
| Requires iOS | 14.0 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [志毅 陈](https://appshunter.io/developer/1529215076) | [Shenzhen Xinyun Zhilian Technology Co., Ltd](https://appshunter.io/developer/1842688252) |

## What reviewers say

### PenX

[App page](https://appshunter.io/ios/app/penx-structured-notes-app/id6745962671)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO member | $4.99 | per month |
| PRO + AI member | $9.99 | per month |
| PRO member | $39.99 | per year |
| PRO + AI member | $79.99 | per year |


### penX

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

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

**In-app purchases:** none


## Frequently asked questions

### Is PenX free?

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

### Is penX free?

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

### Do PenX or penX have ads?

Neither PenX nor penX shows ads.

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

PenX ships an update every 2 days, and penX every 6 weeks. Most recently, PenX was updated on September 11, 2026 and penX on September 24, 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.*