# Compress PDF vs UnderLimit

Compress PDF and UnderLimit are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support 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 2 in-app purchases, starting at $3.99 per 7 days and UnderLimit sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Compress PDF | UnderLimit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/compress-pdf-pdf-compressor/id6752114881/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | — | Every 2 days |
| Monetization | Subscription | — |
| Size | 14 MB | 4 MB |
| Requires iOS | 18 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | +4 | 4+ |
| Developer | [Artiom Yakoventsev](https://appshunter.io/developer/1827801312) | [ALESSANDRO VINCENZO DEL BALZO](https://appshunter.io/developer/6813135046) |

## What reviewers say

### Compress PDF

[App page](https://appshunter.io/ios/app/compress-pdf-pdf-compressor/id6752114881)

This app allows you to reduce the file size of PDF documents while maintaining text selectability and searchability. It offers various editing tools like merging, splitting, and reordering pages, all processed on your device for enhanced privacy. A subscription is needed to save or share your work.

**Highlights:** Reduce PDF file size, Preserve text and layout, On-device processing, Merge and split PDFs, Reorder and remove pages, Password protect PDFs, Convert images to PDF

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $3.99 | per 7 days |
| Lifetime Premium | $19.99 | one-time |


### UnderLimit

[App page](https://appshunter.io/ios/app/underlimit-pdf-compressor/id6813135044)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| UnderLimit Unlimited | $2.99 | one-time |


## Frequently asked questions

### Is Compress PDF free?

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

### Is UnderLimit free?

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

### Do Compress PDF or UnderLimit have ads?

Neither Compress PDF nor UnderLimit shows ads.

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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.*