# PDF Compressor vs Ember

The clearest difference is iOS requirement: Ember at 15.6 against PDF Compressor's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. PDF Compressor sells 3 in-app purchases, starting at $4.99 per 7 days and Ember sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

PDF Compressor ships an update every 6 weeks, Ember every 3 weeks. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | PDF Compressor | Ember |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (83 ratings)](https://appshunter.io/ios/app/pdf-compressor-reduce-size/id6476273989/reviews)** | — |
| Number of ratings | **83** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 61 MB | 5 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [NextPixel apps](https://appshunter.io/developer/1584487280) | [玉清 周](https://appshunter.io/developer/6801954273) |

## What reviewers say

### PDF Compressor

[App page](https://appshunter.io/ios/app/pdf-compressor-reduce-size/id6476273989)

Reduce the size of your PDF documents without sacrificing quality. Optimize PDFs for storage, sharing, and faster loading. Effortlessly manage and share your compressed files anywhere.

**Highlights:** Efficient PDF compression, Retain document quality, User-friendly file management, Easy sharing via multiple platforms, Optimize for storage and transfer

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| File Compressor - PDF | $4.99 | per 7 days |
| File Compressor - PDF | $7.99 | per 7 days |
| PDF Compressor - Resize file | $9.99 | per month |


### Ember

[App page](https://appshunter.io/ios/app/ember-sharing/id6805766236)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| buy diamonds | $1.99 | one-time |
| buy diamonds | $2.99 | one-time |
| buy diamonds | $3.99 | one-time |
| buy diamonds | $4.99 | one-time |
| buy diamonds | $6.99 | one-time |
| buy diamonds | $8.99 | one-time |
| buy diamonds | $19.99 | one-time |
| buy diamonds | $39.99 | one-time |
| buy diamonds | $49.99 | one-time |
| buy diamonds | $84.99 | one-time |


## Frequently asked questions

### Is PDF Compressor free?

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

### Is Ember free?

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

### Do PDF Compressor or Ember have ads?

Neither PDF Compressor nor Ember shows ads.

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

PDF Compressor ships an update every 6 weeks, and Ember every 3 weeks. Most recently, PDF Compressor was updated on October 27, 2026 and Ember on October 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*