# Scanner Pro vs SCAN ACE · PDF Scanner App

The clearest difference is monetization model: Scanner Pro at free with in-app purchases against SCAN ACE · PDF Scanner App's subscription. Scanner Pro also leads on ratings volume (338K vs 39K) and chart position (#32 vs #193). SCAN ACE · PDF Scanner App's advantage is review sentiment (87% vs 78%) and iOS requirement (16.0 vs 18.0). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. Scanner Pro sells 9 in-app purchases, starting at $3.99 per month and SCAN ACE · PDF Scanner App sells 10 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.9 for Scanner Pro against 4.8 for SCAN ACE · PDF Scanner App. That said, the two scores are not equally well evidenced: Scanner Pro has 338K ratings behind it against 39K, so its average is the more settled of the two. Written reviews are what separate them: 78% of Scanner Pro's written reviews are positive against 87% of SCAN ACE · PDF Scanner App's.

Both ship on a similar rhythm, roughly fortnightly. Both last shipped on November 11, 2026.

## The numbers

| Metric | Scanner Pro | SCAN ACE · PDF Scanner App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (338K ratings)](https://appshunter.io/ios/app/scanner-pro-scan-to-pdf/id333710667/reviews)** | [4.8 (39K ratings)](https://appshunter.io/ios/app/scan-ace-pdf-scanner-app/id556500145/reviews) |
| Number of ratings | **338K** | 39K |
| Positive reviews | 77.7% of reviews | **86.8% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | Fortnightly |
| Monetization | **Free with in-app purchases** | Subscription |
| Best chart rank | **#32** | #193 |
| Size | 276 MB | 126 MB |
| Requires iOS | 18.0 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Readdle Technologies Limited](https://appshunter.io/developer/285035419) | [NEO PIXEL LABS PTE. LTD.](https://appshunter.io/developer/1788472183) |

## What reviewers say

### Scanner Pro

[App page](https://appshunter.io/ios/app/scanner-pro-scan-to-pdf/id333710667)

**Currently charting:** #32 Top Grossing · Business (US App Store)

Transform your mobile device into a powerful document scanner. Effortlessly capture, enhance, and convert documents into various formats, including searchable PDFs. Sign, fill out forms, and securely share your files with advanced OCR and cloud integration.

**Highlights:** Automatic edge detection and perspective correction, Convert scans to searchable PDF, Word, PowerPoint, JPG, Add signatures and fill out forms, OCR for editable text extraction, Cloud sync and export to popular services, QR code scanning

**Features:** Vision Pro support, iPhone Duo support

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Scanner Pro Plus | $3.99 | per month |
| Expense Report | $4.99 | per month |
| Scanner Pro Plus | $6.99 | per month |
| Scanner Pro Plus | $7.99 | per 7 days |
| Scanner Pro Plus | $19.99 | per year |
| Scanner Pro Plus | $29.99 | per year |
| Scanner Pro Plus | $59.99 | per year |
| Scanner Pro Plus | $59.99 | per year |
| Fax Pack 1 | $0.99 | one-time |

**What reviewers like**

- 🚀 Excellent scanning quality
- 👍 Easy to use and intuitive
- 💾 Seamless cloud integration
- 🌟 Consistently great over the years
- 🔍 Accurate edge detection and cropping

**What reviewers complain about**

- 🐛 Crashes and stability issues
- ⚠️ Unreliable cloud sync and file management
- 🔍 Struggles with low-quality or angled documents
- 💤 Slow performance with large documents
- 🙅‍♀️ Intrusive advertising and upselling

**Reported bugs**

- Sudden loss of scanned documents
- Inconsistent iCloud sync and storage
- Cropping and alignment issues after updates

**Requested features**

- Ability to create subfolders
- Improved OCR accuracy, especially for receipts
- Direct import of emailed documents
- Customizable naming and organization options
- Faster cloud sync and better offline access


### SCAN ACE · PDF Scanner App

[App page](https://appshunter.io/ios/app/scan-ace-pdf-scanner-app/id556500145)

**Currently charting:** #193 Top Grossing · Business (US App Store)

Transform any document or image into a high-quality digital file. This app offers automatic edge detection, multiple scan modes, and advanced editing tools like OCR, filters, and watermarking. Securely manage, share, and convert your files with ease.

**Highlights:** Automatic document edge detection, Document, ID, and Passport scan modes, AI OCR for text recognition and copying, Professional editing filters, Add signatures and watermarks, Password protection for PDFs, Cloud storage integration

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Plan - Monthly | $2.99 | per month |
| Premium Plan - Weekly | $4.99 | per 7 days |
| Premium Plan - Weekly | $4.99 | per 7 days |
| Premium Plan - Weekly | $5.99 | per 7 days |
| Premium Plan - Monthly | $9.99 | per month |
| Premium Plan - Weekly | $9.99 | per 7 days |
| Premium Plan - Yearly | $19.99 | per year |
| Premium Plan - Yearly | $29.99 | per year |
| Premium Plan - Yearly | $29.99 | per year |
| Premium Plan - Yearly | $49.99 | per year |

**What reviewers like**

- 💻 Easy to use
- 🚀 Convenient for on-the-go scanning
- 📁 Effective for organizing and storing documents
- 🔍 Produces high-quality scans
- ⚙️ Useful features like color/grayscale options

**What reviewers complain about**

- 🐛 Issues with recent updates (e.g., lost folder organization, decreased functionality)
- 🔍 Quality concerns with some scans
- 🔒 Unreliable cloud storage integration (Dropbox, Google Drive)
- 💰 Frustration with subscription model after previous one-time purchase
- 🤔 Confusing or unintuitive user interface

**Reported bugs**

- Crashes or freezes during use
- Issues with batch scanning and document processing
- Problems with exporting or sharing scanned documents

**Requested features**

- Restore folder organization and management
- Improve cloud storage integration and sync
- Add more customization options for file naming and organization
- Enhance multi-page scanning and editing capabilities


## Frequently asked questions

### Is Scanner Pro free?

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

### Is SCAN ACE · PDF Scanner App free?

SCAN ACE · PDF Scanner App is free to download, with in-app purchases available.

### Which has better reviews, Scanner Pro or SCAN ACE · PDF Scanner App?

Scanner Pro is rated higher. Scanner Pro averages 4.9 out of 5 from 338K ratings, while SCAN ACE · PDF Scanner App averages 4.8 from 39K ratings.

### Do Scanner Pro or SCAN ACE · PDF Scanner App have ads?

Neither Scanner Pro nor SCAN ACE · PDF Scanner App shows ads.

### Which is updated more often, Scanner Pro or SCAN ACE · PDF Scanner App?

Scanner Pro ships an update fortnightly, and SCAN ACE · PDF Scanner App fortnightly. Most recently, Scanner Pro was updated on November 11, 2026 and SCAN ACE · PDF Scanner App on November 11, 2026.

### Which is more popular, Scanner Pro or SCAN ACE · PDF Scanner App?

Scanner Pro currently peaks at #32 in the App Store charts, and SCAN ACE · PDF Scanner App at #193. Chart position reflects recent download velocity rather than total install base.

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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.*