# PDF Scanner App vs Octovigintuple Calc

The clearest difference is in-app purchases: Octovigintuple Calc at none against PDF Scanner App's 13. Octovigintuple Calc also leads on device support (3 vs 1). PDF Scanner App's advantage is ads (none vs shown). On price, update cadence and iOS requirement there is nothing between them.

Both are free to download. PDF Scanner App sells 13 in-app purchases, starting at $9.99 per 7 days. Octovigintuple Calc asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on October 30, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | PDF Scanner App | Octovigintuple Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (63 ratings)](https://appshunter.io/ios/app/pdf-scanner-app-ai-scanner/id6738774478/reviews)** | — |
| Number of ratings | **63** | — |
| Positive reviews | 16.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 216 MB | 36 MB |
| Requires iOS | 16.6 | **15.8.3** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Shanghai Zongchong Information Technology Co., Ltd](https://appshunter.io/developer/1782290488) | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) |

## What reviewers say

### PDF Scanner App

[App page](https://appshunter.io/ios/app/pdf-scanner-app-ai-scanner/id6738774478)

This app uses AI to enhance scanned documents, making text sharp and readable even in poor lighting. It offers automatic cropping, multilingual OCR, and flexible file management for easy sharing and organization.

**Highlights:** AI smart HD enhancement, Intelligent binarization, Accurate document scanning, Multilingual OCR, Flexible file management, Easy sharing

**Features:** Family Sharing

**In-app purchases (13)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Special offer for new users | $9.99 | per 7 days |
| Scanner App Pro 1 Week | $9.99 | per 7 days |
| Scanner App Pro 1 Week | $9.99 | per 7 days |
| Special offer for new users | $14.99 | per month |
| Scanner App Pro 1 Monthly | $14.99 | per month |
| AI 全能扫描王半年会员 | $19.99 | per 6 months |
| Scanner App Pro 3 Monthly | $19.99 | per 3 months |
| Scanner App Pro 1 Year | $29.99 | per year |
| Scanner App Pro 1 Year | $39.99 | per year |
| AI全能扫描王月会员 | $14.99 | one-time |
| Scanner App Pro 3 Monthly | $24.99 | one-time |
| Scanner App Pro 3 Monthly | $44.99 | one-time |
| FScanup Pro Lifetime | $69.99 | one-time |


### Octovigintuple Calc

[App page](https://appshunter.io/ios/app/octovigintuple-calc/id6742526512)

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

**In-app purchases:** none


## Frequently asked questions

### Is PDF Scanner App free?

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

### Is Octovigintuple Calc free?

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

### Do PDF Scanner App or Octovigintuple Calc have ads?

Octovigintuple Calc shows ads; PDF Scanner App does not.

### Which is updated more often, PDF Scanner App or Octovigintuple Calc?

PDF Scanner App ships an update every 2 weeks, and Octovigintuple Calc every 2 weeks. Most recently, PDF Scanner App was updated on October 30, 2026 and Octovigintuple Calc on October 6, 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.*