# Compress PDF vs Shrink PDF

Compress PDF and Shrink PDF are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Compress PDF sells 3 in-app purchases, starting at $2.99 per 7 days and Shrink PDF sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Compress PDF ships an update every 3 weeks, Shrink PDF every 2 weeks. The most recent releases landed on October 27, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Compress PDF | Shrink PDF |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Size | 33 MB | 39 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Muhammad Awais Younas](https://appshunter.io/developer/1771187232) | [hiroki kawamura](https://appshunter.io/developer/1613885005) |

## What reviewers say

### Compress PDF

[App page](https://appshunter.io/ios/app/compress-pdf-pdf-compressor/id6790176607)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Week | $2.99 | per 7 days |
| Premium Month | $7.99 | per month |
| Premium Year | $49.99 | per year |


### Shrink PDF

[App page](https://appshunter.io/ios/app/shrink-pdf-compress-pdf-files/id6795783274)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ad-Free Forever | $17.99 | one-time |


## Frequently asked questions

### Is Compress PDF free?

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

### Is Shrink PDF free?

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

### Do Compress PDF or Shrink PDF have ads?

Both Compress PDF and Shrink PDF show ads.

### Which is updated more often, Compress PDF or Shrink PDF?

Compress PDF ships an update every 3 weeks, and Shrink PDF every 2 weeks. Most recently, Compress PDF was updated on October 27, 2026 and Shrink PDF on November 10, 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.*