# Uboard vs PDF Compressor

The clearest difference is in-app purchases: Uboard at none against PDF Compressor's 3. Uboard also leads on update cadence (every 10 days vs every 3 weeks) and iOS requirement (12.0 vs 16.0). On price, ads and device support there is nothing between them.

Both are free to download. PDF Compressor sells 3 in-app purchases, starting at $0.99 per month. Uboard asks for nothing beyond the download.

Uboard ships an update every 10 days, PDF Compressor every 3 weeks. The most recent releases landed on November 8, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Uboard | PDF Compressor |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 3 weeks |
| Size | 40 MB | 7 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [UDATA JOINT STOCK COMPANY](https://appshunter.io/developer/1810840364) | [荣晖 丁](https://appshunter.io/developer/1455797103) |

## What reviewers say

### Uboard

[App page](https://appshunter.io/ios/app/uboard/id6745115321)

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

**In-app purchases:** none


### PDF Compressor

[App page](https://appshunter.io/ios/app/pdf-compressor-shrink-files/id6767108146)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Pro | $0.99 | per month |
| Yearly Pro | $2.99 | per year |
| Lifetime Pro | $3.99 | one-time |


## Frequently asked questions

### Is Uboard free?

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

### Is PDF Compressor free?

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

### Do Uboard or PDF Compressor have ads?

Neither Uboard nor PDF Compressor shows ads.

### Which is updated more often, Uboard or PDF Compressor?

Uboard ships an update every 10 days, and PDF Compressor every 3 weeks. Most recently, Uboard was updated on November 8, 2026 and PDF Compressor 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.*