# Echo Feedback App vs PDF Compress

The clearest difference is in-app purchases: Echo Feedback App at none against PDF Compress's 3. Echo Feedback App also leads on update cadence (every 5 weeks vs every 3 months) and iOS requirement (13.4 vs 16.0). On price, ads and device support there is nothing between them.

Both are free to download. PDF Compress sells 3 in-app purchases, starting at $1.99 per 7 days. Echo Feedback App asks for nothing beyond the download.

Echo Feedback App ships an update every 5 weeks, PDF Compress every 3 months. The most recent releases landed on September 13, 2026 and June 4, 2026 respectively.

## The numbers

| Metric | Echo Feedback App | PDF Compress |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.0 (1 ratings)](https://appshunter.io/ios/app/pdf-compress-size-compressor/id6642679859/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 3 months |
| Monetization | — | Free with in-app purchases |
| Size | 4 MB | 6 MB |
| Requires iOS | **13.4** | 16.0 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Effect Studios](https://appshunter.io/developer/1464134973) | [Mohamed Oufqir](https://appshunter.io/developer/1750312649) |

## What reviewers say

### Echo Feedback App

[App page](https://appshunter.io/ios/app/echo-feedback-app/id1487196374)

**Features:** macOS Compatibility

**In-app purchases:** none


### PDF Compress

[App page](https://appshunter.io/ios/app/pdf-compress-size-compressor/id6642679859)

This tool allows you to significantly reduce the size of PDF files, making them easier to share. It offers multiple compression levels and a user-friendly interface for quick and efficient file management. You can also rename and preview files before sharing.

**Highlights:** Compress PDF files to desired size, Multiple compression levels, User-friendly design, Fast and easy-to-use interface, Achieve over 90% compression, Rename PDF files, Preview PDF files

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Week | $1.99 | per 7 days |
| Month | $4.99 | per month |
| Year | $14.99 | per year |


## Frequently asked questions

### Is Echo Feedback App free?

Echo Feedback App is free to download, with no in-app purchases.

### Is PDF Compress free?

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

### Do Echo Feedback App or PDF Compress have ads?

Neither Echo Feedback App nor PDF Compress shows ads.

### Which is updated more often, Echo Feedback App or PDF Compress?

Echo Feedback App ships an update every 5 weeks, and PDF Compress every 3 months. Most recently, Echo Feedback App was updated on September 13, 2026 and PDF Compress on June 4, 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.*