# PDF Scanner Document Converter vs iSign

The clearest difference is review sentiment: iSign at 100% against PDF Scanner Document Converter's 32%. iSign also leads on rating (5.0 vs 4.5) and ads (none vs shown). PDF Scanner Document Converter's advantage is ratings volume (549 vs 1) and iOS requirement (16.0 vs 18.0). On price, update cadence, in-app purchases and monetization model there is nothing between them.

Both are free to download. PDF Scanner Document Converter sells 5 in-app purchases, starting at $9.99 per month and iSign sells 9 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

iSign holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: PDF Scanner Document Converter has 549 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 32% of PDF Scanner Document Converter's written reviews are positive against 100% of iSign's.

PDF Scanner Document Converter ships an update fortnightly, iSign every 3 weeks. The most recent releases landed on November 11, 2026 and November 12, 2026 respectively.

## The numbers

| Metric | PDF Scanner Document Converter | iSign |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (549 ratings)](https://appshunter.io/ios/app/pdf-scanner-document-converter/id1455198783/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/isign-pdf-scanner-ai-editor/id6444390217/reviews)** |
| Number of ratings | **549** | 1 |
| Positive reviews | 31.9% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 151 MB | 98 MB |
| Requires iOS | **16.0** | 18.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [兰 陈](https://appshunter.io/developer/1227702815) | [Bruno Wide](https://appshunter.io/developer/1262013609) |

## What reviewers say

### PDF Scanner Document Converter

[App page](https://appshunter.io/ios/app/pdf-scanner-document-converter/id1455198783)

Transform your phone into a powerful document scanner and converter. Easily capture paper documents, convert them to various formats like PDF or Word, and then edit, sign, or share them securely. All processing and storage happen locally on your device for enhanced privacy.

**Highlights:** AI-enhanced document scanning, Automatic straightening and perspective correction, Multi-language OCR text recognition, Digital signature and annotation tools, Export to PDF, Word, JPG, TXT, Local document storage and processing, Password protection for files

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plan | $9.99 | per month |
| PDF Scanner Converter | $9.99 | per 7 days |
| Weekly Plan | $9.99 | per 7 days |
| PDF Document Scanner | $59.99 | per year |
| Document Scanner App | $69.99 | per year |

**What reviewers like**

- 👍 Easy to use and intuitive interface
- 📄 Converts photos to PDF documents effectively
- 💼 Useful for business and professional needs
- 📧 Allows emailing and faxing scanned documents
- 📁 Keeps PDF file sizes small

**What reviewers complain about**

- 💳 Aggressive subscription billing practices
- ❌ Difficult or impossible to cancel subscription
- 🐛 App crashes frequently
- 📸 Poor scan quality and accuracy
- 🚫 No free trial without payment method

**Reported bugs**

- App crashes on launch
- Scan quality is unreadable
- App keeps asking to sign up despite active account
- Files not emailing properly
- Incompatibility with iPhone 5S

**Requested features**

- Easy in-app cancellation option
- Color scan option
- Genuine free trial without credit card requirement
- Better customer support channels


### iSign

[App page](https://appshunter.io/ios/app/isign-pdf-scanner-ai-editor/id6444390217)

Transform any document into a searchable, signable PDF. Scan, organize, and edit with AI-powered summaries and OCR. Your data remains private on your device.

**Highlights:** Scan documents to PDF, Automatic edge detection, Edit and sign documents, OCR text recognition, AI-powered summaries, On-device data storage

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Scanner Pro - Monthly Promo | $0.99 | per month |
| Premium Monthly | $4.59 | per month |
| Premium Weekly | $4.99 | per 7 days |
| Scanner Pro - Yearly Promo | $9.99 | per year |
| Scanner Pro - Yearly | $19.99 | per year |
| Premium Yearly | $33.99 | per year |
| Premium Yearly | $36.99 | per year |
| Premium Yearly | $40.99 | per year |
| Premium Yearly | $99.99 | per year |


## Frequently asked questions

### Is PDF Scanner Document Converter free?

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

### Is iSign free?

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

### Which has better reviews, PDF Scanner Document Converter or iSign?

iSign is rated higher. PDF Scanner Document Converter averages 4.5 out of 5 from 549 ratings, while iSign averages 5.0 from 1 ratings.

### Do PDF Scanner Document Converter or iSign have ads?

PDF Scanner Document Converter shows ads; iSign does not.

### Which is updated more often, PDF Scanner Document Converter or iSign?

PDF Scanner Document Converter ships an update fortnightly, and iSign every 3 weeks. Most recently, PDF Scanner Document Converter was updated on November 11, 2026 and iSign on November 12, 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.*