# Snail Scan vs Document Signer App

The clearest difference is device support: Snail Scan at 3 against Document Signer App's 1. Snail Scan also leads on iOS requirement (13.0 vs 17.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Snail Scan sells 4 in-app purchases, starting at $4.99 per 7 days and Document Signer App sells 3 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Snail Scan ships an update every 11 days, Document Signer App every 3 weeks. The most recent releases landed on September 9, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Snail Scan | Document Signer App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/document-signer-app/id6741525691/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 75.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 11 days** | Every 3 weeks |
| Monetization | — | Freemium |
| Size | 6 MB | 16 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [琳曼 张](https://appshunter.io/developer/1577186320) | [CREATIVE TECHNOLOGIES LLC](https://appshunter.io/developer/1440323598) |

## What reviewers say

### Snail Scan

[App page](https://appshunter.io/ios/app/snail-scan-pdf-scanner/id1609821312)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| $4.99 per week | $4.99 | per 7 days |
| $9.99 per month | $9.99 | per month |
| $19.99 per year | $19.99 | per year |
| $39.99 per year | $39.99 | per year |


### Document Signer App

[App page](https://appshunter.io/ios/app/document-signer-app/id6741525691)

Digitize paper documents with a built-in scanner and create your unique digital signature. Sign PDFs and various file formats quickly and easily from your smartphone. Share your signed documents effortlessly via email or other apps.

**Highlights:** Create and customize digital signatures, Sign documents quickly, Built-in document scanner, Support for various file formats, Share signed documents

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| E-sign Premium | $4.99 | per 7 days |
| E-sign Premium | $9.99 | per month |
| E-sign Premium | $49.99 | per year |


## Frequently asked questions

### Is Snail Scan free?

Snail Scan is free to download, with in-app purchases available.

### Is Document Signer App free?

Document Signer App is free to download, with in-app purchases available.

### Do Snail Scan or Document Signer App have ads?

Neither Snail Scan nor Document Signer App shows ads.

### Which is updated more often, Snail Scan or Document Signer App?

Snail Scan ships an update every 11 days, and Document Signer App every 3 weeks. Most recently, Snail Scan was updated on September 9, 2026 and Document Signer App on September 18, 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.*