# ECM MetricS vs PDF Scanner

The clearest difference is in-app purchases: ECM MetricS at none against PDF Scanner's 3. ECM MetricS also leads on device support (3 vs 1) and iOS requirement (14.0 vs 17.0). PDF Scanner's advantage is update cadence (every 2 weeks vs every 4 months). On price and ads there is nothing between them.

Both are free to download. PDF Scanner sells 3 in-app purchases, starting at $3.99 per 7 days. ECM MetricS asks for nothing beyond the download.

ECM MetricS ships an update every 4 months, PDF Scanner every 2 weeks. The most recent releases landed on November 7, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | ECM MetricS | PDF Scanner |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pdf-scanner-sign-document/id6753982842/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Monetization | — | Freemium |
| Size | 29 MB | 14 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Systems Solutions Private Limited](https://appshunter.io/developer/1082658206) | [Bouazza El Amri](https://appshunter.io/developer/1834967332) |

## What reviewers say

### ECM MetricS

[App page](https://appshunter.io/ios/app/ecm-metrics/id1559849297)

**Features:** macOS Compatibility

**In-app purchases:** none


### PDF Scanner

[App page](https://appshunter.io/ios/app/pdf-scanner-sign-document/id6753982842)

Easily sign, scan, and edit PDF documents on your iPhone. Convert files to various formats, extract text with OCR, and securely share your work. This all-in-one tool streamlines your document management.

**Highlights:** Add electronic signatures, Scan and convert documents, Edit PDF pages, Extract text with OCR, Convert PDF to images, Password-protect documents

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO Weekly | $3.99 | per 7 days |
| Pro Yearly | $19.99 | per year |
| One-Time Payment | $9.99 | one-time |


## Frequently asked questions

### Is ECM MetricS free?

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

### Is PDF Scanner free?

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

### Do ECM MetricS or PDF Scanner have ads?

Neither ECM MetricS nor PDF Scanner shows ads.

### Which is updated more often, ECM MetricS or PDF Scanner?

ECM MetricS ships an update every 4 months, and PDF Scanner every 2 weeks. Most recently, ECM MetricS was updated on November 7, 2026 and PDF Scanner on October 30, 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.*