# Panecal Scientific Calculator vs QR code reader for PDF scanner

The clearest difference is in-app purchases: Panecal Scientific Calculator at none against QR code reader for PDF scanner's 1. Panecal Scientific Calculator also leads on update cadence (every 2 months vs every 13 months) and iOS requirement (12.0 vs 14.0). On price, ads and device support there is nothing between them.

Both are free to download. QR code reader for PDF scanner sells 1 one-off in-app purchase. Panecal Scientific Calculator asks for nothing beyond the download.

Panecal Scientific Calculator ships an update every 2 months, QR code reader for PDF scanner every 13 months. The most recent releases landed on September 24, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Panecal Scientific Calculator | QR code reader for PDF scanner |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (1.9K ratings)](https://appshunter.io/ios/app/panecal-scientific-calculator/id668500803/reviews)** | — |
| Number of ratings | **1.9K** | — |
| Positive reviews | 75.8% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 2 months** | Every 13 months |
| Monetization | Ad-supported | — |
| Size | 34 MB | 31 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Noriyasu Kutsuzawa](https://appshunter.io/developer/668500806) | [Maria Melero Gonzalez Barandiaran](https://appshunter.io/developer/1342106159) |

## What reviewers say

### Panecal Scientific Calculator

[App page](https://appshunter.io/ios/app/panecal-scientific-calculator/id668500803)

This app functions as a scientific calculator, enabling users to input and edit complex formulas with ease. It supports formula history, variable memory, and various number system conversions for accurate calculations.

**Highlights:** Formula editing with cursor and swipe, Reuse past formulas, Variable memory for calculations, Binary, octal, decimal, hexadecimal conversion, M+/M- memory functions, Angle unit settings (DEG, RAD, GRAD)

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Great button layout
- 👍 Intuitive and user-friendly
- 👍 Powerful scientific functions
- 👍 Convenient display and history
- 👍 Useful for various fields (construction, engineering, etc.)

**What reviewers complain about**

- 🐛 Calculation errors in some cases
- 🐛 Glitches and crashes reported
- 🔍 Lack of engineering prefixes
- 📺 Ads can be intrusive
- 🔍 Suboptimal button placement and sizing

**Reported bugs**

- Inability to switch back from Bin mode
- Calculation history not scrolling properly
- Inconsistent behavior with certain operations

**Requested features**

- Unit conversion tools
- Customizable font and icon
- Ability to rotate screen
- More advanced programming features
- Improved order of operations handling


### QR code reader for PDF scanner

[App page](https://appshunter.io/ios/app/qr-code-reader-for-pdf-scanner/id1342106160)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $3.99 | one-time |


## Frequently asked questions

### Is Panecal Scientific Calculator free?

Panecal Scientific Calculator is free to download, with no in-app purchases.

### Is QR code reader for PDF scanner free?

QR code reader for PDF scanner is free to download, with in-app purchases available.

### Do Panecal Scientific Calculator or QR code reader for PDF scanner have ads?

Both Panecal Scientific Calculator and QR code reader for PDF scanner show ads.

### Which is updated more often, Panecal Scientific Calculator or QR code reader for PDF scanner?

Panecal Scientific Calculator ships an update every 2 months, and QR code reader for PDF scanner every 13 months. Most recently, Panecal Scientific Calculator was updated on September 24, 2026 and QR code reader for PDF scanner on September 8, 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.*