# uPen vs K

The clearest difference is update cadence: K at every 3 weeks against uPen's every 6 months. uPen's advantage is iOS requirement (13.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

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

uPen ships an update every 6 months, K every 3 weeks. The most recent releases landed on October 5, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | uPen | K |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 3 weeks** |
| Size | 20 MB | 71 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Unimatica S.p.A.](https://appshunter.io/developer/951004830) | [Kommerce Hub](https://appshunter.io/developer/1693075823) |

## What reviewers say

### uPen

[App page](https://appshunter.io/ios/app/upen/id951004831)

**Features:** macOS Compatibility

**In-app purchases:** none


### K

[App page](https://appshunter.io/ios/app/k-hub-b2b-admin/id6738956291)

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

**In-app purchases:** none


## Frequently asked questions

### Is uPen free?

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

### Is K free?

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

### Do uPen or K have ads?

Neither uPen nor K shows ads.

### Which is updated more often, uPen or K?

uPen ships an update every 6 months, and K every 3 weeks. Most recently, uPen was updated on October 5, 2026 and K on October 17, 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.*