# Sin PDF vs ScanLater

The clearest difference is iOS requirement: Sin PDF at 11.0 against ScanLater's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Sin PDF ships an update every 2 months, ScanLater every 3 months. The most recent releases landed on October 10, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Sin PDF | ScanLater |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Free | — |
| Size | 33 MB | 7 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [mounir tajaouart](https://appshunter.io/developer/1610887165) | [天祺 王](https://appshunter.io/developer/1700863478) |

## What reviewers say

### Sin PDF

[App page](https://appshunter.io/ios/app/sin-pdf-pdf-file-signing/id1641053043)

Easily sign and track important documents by importing PDFs and adding your signature as an image or text. Generate and save signed documents for future reference with a simple, intuitive interface.

**Highlights:** Import any PDF file, Add signature as image, Add text to PDF, Generate signed PDF, Save and store signed documents, Track all signatures and files

**Features:** macOS Compatibility

**In-app purchases:** none


### ScanLater

[App page](https://appshunter.io/ios/app/scanlater-scan-qr-code/id6464375127)

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

**In-app purchases:** none


## Frequently asked questions

### Is Sin PDF free?

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

### Is ScanLater free?

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

### Do Sin PDF or ScanLater have ads?

Neither Sin PDF nor ScanLater shows ads.

### Which is updated more often, Sin PDF or ScanLater?

Sin PDF ships an update every 2 months, and ScanLater every 3 months. Most recently, Sin PDF was updated on October 10, 2026 and ScanLater on October 7, 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.*