# Compress PDF vs NyxID

The clearest difference is in-app purchases: NyxID at none against Compress PDF's 3. NyxID also leads on ads (none vs shown) and iOS requirement (15.1 vs 17.6). Compress PDF's advantage is update cadence (every 6 weeks vs every 3 months). On price and device support there is nothing between them.

Both are free to download. Compress PDF sells 3 in-app purchases, starting at $2.99 per 7 days. NyxID asks for nothing beyond the download.

Compress PDF ships an update every 6 weeks, NyxID every 3 months. The most recent releases landed on November 3, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Compress PDF | NyxID |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (6 ratings)](https://appshunter.io/ios/app/compress-pdf-reduce-file-size/id1661782548/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 88.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 6 weeks** | Every 3 months |
| Monetization | Free with in-app purchases | — |
| Size | 49 MB | 40 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Rahul Alagiya](https://appshunter.io/developer/1572484207) | [ERISED PTE. LTD.](https://appshunter.io/developer/1687044658) |

## What reviewers say

### Compress PDF

[App page](https://appshunter.io/ios/app/compress-pdf-reduce-file-size/id1661782548)

Easily compress PDF files to reduce size without quality loss. This tool also allows scanning documents, merging PDFs, editing pages, and adding e-signatures. Optimize your documents for sharing and storage with a comprehensive offline PDF toolkit.

**Highlights:** Compress PDF files, Scan documents to PDF, Merge multiple PDF files, Edit PDF pages, Add e-signatures, Extract text with OCR, Protect PDFs with watermarks

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $2.99 | per 7 days |
| Monthly Subscription | $4.99 | per month |
| Convert Images To PDF | $14.99 | one-time |


### NyxID

[App page](https://appshunter.io/ios/app/nyxid/id6759768423)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Compress PDF free?

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

### Is NyxID free?

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

### Do Compress PDF or NyxID have ads?

Compress PDF shows ads; NyxID does not.

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

Compress PDF ships an update every 6 weeks, and NyxID every 3 months. Most recently, Compress PDF was updated on November 3, 2026 and NyxID on November 9, 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.*