# Snail Scan vs Sign Documents

The clearest difference is iOS requirement: Snail Scan at 13.0 against Sign Documents's 15.0. 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 Sign Documents sells 2 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, Sign Documents weekly. The most recent releases landed on September 9, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Snail Scan | Sign Documents |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (6 ratings)](https://appshunter.io/ios/app/sign-documents-docink/id6744578921/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 11 days | **Weekly** |
| Monetization | — | Freemium |
| Size | 6 MB | 31 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | +4 |
| Developer | [琳曼 张](https://appshunter.io/developer/1577186320) | [BMR Tools B.V](https://appshunter.io/developer/1886114398) |

## 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 |


### Sign Documents

[App page](https://appshunter.io/ios/app/sign-documents-docink/id6744578921)

Digitally sign documents from your mobile device with a handwritten signature. Streamline your workflow by importing, signing, and sending various document formats securely, eliminating the need for printing or scanning.

**Highlights:** Digital handwritten signature creation, Secure document signing, Import from phone, email, cloud, Support for PDF, DOCX, and more, Sign and send directly, Signature history tracking

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DocInk Premium | $4.99 | per 7 days |
| DocInk Premium | $19.99 | per year |


## Frequently asked questions

### Is Snail Scan free?

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

### Is Sign Documents free?

Sign Documents is free to download, with in-app purchases available.

### Do Snail Scan or Sign Documents have ads?

Neither Snail Scan nor Sign Documents shows ads.

### Which is updated more often, Snail Scan or Sign Documents?

Snail Scan ships an update every 11 days, and Sign Documents weekly. Most recently, Snail Scan was updated on September 9, 2026 and Sign Documents on September 22, 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.*