# Nucleus Enterprise vs Unlock PDF

The clearest difference is update cadence: Nucleus Enterprise at every 2 weeks against Unlock PDF's every 4 months. 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.

Nucleus Enterprise ships an update every 2 weeks, Unlock PDF every 4 months. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Nucleus Enterprise | Unlock PDF |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 4 months |
| Size | 117 MB | 42 MB |
| Requires iOS | **15.5** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Nucleus Enterprise](https://appshunter.io/developer/1585913768) | [Lubomir Dlhy](https://appshunter.io/developer/6779644573) |

## What reviewers say

### Nucleus Enterprise

[App page](https://appshunter.io/ios/app/nucleus-enterprise/id6446819933)

**Features:** Vision Pro support

**In-app purchases:** none


### Unlock PDF

[App page](https://appshunter.io/ios/app/unlock-pdf-password-remover/id6779644571)

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

**In-app purchases:** none


## Frequently asked questions

### Is Nucleus Enterprise free?

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

### Is Unlock PDF free?

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

### Do Nucleus Enterprise or Unlock PDF have ads?

Neither Nucleus Enterprise nor Unlock PDF shows ads.

### Which is updated more often, Nucleus Enterprise or Unlock PDF?

Nucleus Enterprise ships an update every 2 weeks, and Unlock PDF every 4 months. Most recently, Nucleus Enterprise was updated on November 3, 2026 and Unlock PDF on October 31, 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.*