# PDF Compress vs Already Seen

The clearest difference is update cadence: Already Seen at every 5 days against PDF Compress's every 11 days. 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.

PDF Compress ships an update every 11 days, Already Seen every 5 days. The most recent releases landed on September 10, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | PDF Compress | Already Seen |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 days | **Every 5 days** |
| Size | 5 MB | 43 MB |
| Requires iOS | **17.4** | 18.2 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Shivang Mishra](https://appshunter.io/developer/1721126376) | [Luca Fabiani](https://appshunter.io/developer/1799140096) |

## What reviewers say

### PDF Compress

[App page](https://appshunter.io/ios/app/pdf-compress-reduce-pdf-size/id6504757939)

**Features:** macOS Compatibility

**In-app purchases:** none


### Already Seen

[App page](https://appshunter.io/ios/app/already-seen/id6757148608)

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

**In-app purchases:** none


## Frequently asked questions

### Is PDF Compress free?

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

### Is Already Seen free?

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

### Do PDF Compress or Already Seen have ads?

Neither PDF Compress nor Already Seen shows ads.

### Which is updated more often, PDF Compress or Already Seen?

PDF Compress ships an update every 11 days, and Already Seen every 5 days. Most recently, PDF Compress was updated on September 10, 2026 and Already Seen on September 14, 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.*