# Doc Align vs PDF Scanner

The clearest difference is update cadence: PDF Scanner at every 4 days against Doc Align's monthly. Doc Align's advantage is iOS requirement (15.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Doc Align sells 1 one-off in-app purchase and PDF Scanner sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Doc Align ships an update monthly, PDF Scanner every 4 days. The most recent releases landed on November 5, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Doc Align | PDF Scanner |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pdf-scanner-scan-sign-ocr/id6775199070/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Monthly | **Every 4 days** |
| Monetization | — | Free with in-app purchases |
| Size | 18 MB | 29 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kazuhisa Kobayashi](https://appshunter.io/developer/1580882000) | [Matthew Wong](https://appshunter.io/developer/6774040057) |

## What reviewers say

### Doc Align

[App page](https://appshunter.io/ios/app/doc-align-perspective-fixer/id6748571837)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $4.99 | one-time |


### PDF Scanner

[App page](https://appshunter.io/ios/app/pdf-scanner-scan-sign-ocr/id6775199070)

Transform your mobile device into a powerful document scanner. Easily capture, edit, and organize PDFs with features like OCR, digital signatures, and form filling. Streamline your workflow and go paperless.

**Highlights:** Automatic edge detection and perspective correction, On-device OCR for searchable PDFs, Digital signature creation and placement, Interactive PDF form filling, Page organization and merging, Cloud storage integration

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $3.99 | per month |
| Pro Annual | $19.99 | per year |
| Pro Lifetime | $59.99 | one-time |


## Frequently asked questions

### Is Doc Align free?

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

### Is PDF Scanner free?

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

### Do Doc Align or PDF Scanner have ads?

Both Doc Align and PDF Scanner show ads.

### Which is updated more often, Doc Align or PDF Scanner?

Doc Align ships an update monthly, and PDF Scanner every 4 days. Most recently, Doc Align was updated on November 5, 2026 and PDF Scanner on November 3, 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.*