# Doc Align vs ScanPDF

The clearest difference is in-app purchases: ScanPDF at none against Doc Align's 1. Doc Align's advantage is iOS requirement (15.0 vs 26.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Doc Align sells 1 one-off in-app purchase. ScanPDF asks for nothing beyond the download.

Doc Align ships an update monthly, ScanPDF every 6 weeks. The most recent releases landed on October 2, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Doc Align | ScanPDF |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Monthly** | Every 6 weeks |
| Size | 18 MB | 6 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kazuhisa Kobayashi](https://appshunter.io/developer/1580882000) | [Shuto Nishiyama](https://appshunter.io/developer/1879174354) |

## 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 |


### ScanPDF

[App page](https://appshunter.io/ios/app/scanpdf-document-scanner/id6759512455)

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

**In-app purchases:** none


## Frequently asked questions

### Is Doc Align free?

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

### Is ScanPDF free?

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

### Do Doc Align or ScanPDF have ads?

Both Doc Align and ScanPDF show ads.

### Which is updated more often, Doc Align or ScanPDF?

Doc Align ships an update monthly, and ScanPDF every 6 weeks. Most recently, Doc Align was updated on October 2, 2026 and ScanPDF on October 7, 2026.

---

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