# Omni PDF Unlocker vs Java Calendar

The clearest difference is price: Omni PDF Unlocker at Free against Java Calendar's $4.99. Omni PDF Unlocker also leads on device support (4 vs 2) and iOS requirement (15.6 vs 17.0). Java Calendar's advantage is in-app purchases (none vs 1) and update cadence (every 4 weeks vs every 4 months). On ads there is nothing between them.

Omni PDF Unlocker is free to download; Java Calendar costs $4.99 up front. Omni PDF Unlocker sells 1 one-off in-app purchase. Java Calendar asks for nothing beyond the download.

Omni PDF Unlocker ships an update every 4 months, Java Calendar every 4 weeks. The most recent releases landed on October 5, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Omni PDF Unlocker | Java Calendar |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/omni-pdf-unlocker-password/id6474602222/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 71.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 4 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 60 MB | 13 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Baofeng County Jixu Education Information Consulting Co., Ltd.](https://appshunter.io/developer/1298441489) | [Djauhery .](https://appshunter.io/developer/1510896841) |

## What reviewers say

### Omni PDF Unlocker

[App page](https://appshunter.io/ios/app/omni-pdf-unlocker-password/id6474602222)

Easily remove password protection and restrictions from PDF files with a single click. This utility also allows you to encrypt PDFs with a password to prevent unauthorized viewing or editing. It supports batch processing and operates fully offline for enhanced security.

**Highlights:** Remove PDF password protection, Set passwords to restrict usage, Encrypt PDFs for viewing protection, Batch processing for multiple files, Fully offline operation, Remove edit restrictions without original password

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Omni PDF Unlocker Premium | $4.99 | one-time |


### Java Calendar

[App page](https://appshunter.io/ios/app/java-calendar/id6796907324)

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

**In-app purchases:** none


## Frequently asked questions

### Is Omni PDF Unlocker free?

Omni PDF Unlocker is free to download, with in-app purchases available.

### Is Java Calendar free?

Java Calendar costs $4.99, with no in-app purchases.

### Do Omni PDF Unlocker or Java Calendar have ads?

Neither Omni PDF Unlocker nor Java Calendar shows ads.

### Which is updated more often, Omni PDF Unlocker or Java Calendar?

Omni PDF Unlocker ships an update every 4 months, and Java Calendar every 4 weeks. Most recently, Omni PDF Unlocker was updated on October 5, 2026 and Java Calendar on October 3, 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.*