# ExtCalc vs QR Pro

The clearest difference is review sentiment: QR Pro at 73% against ExtCalc's 0%. QR Pro also leads on in-app purchases (none vs 2) and update cadence (weekly vs every 5 months). On price, ads and device support there is nothing between them.

Both are free to download. ExtCalc sells 2 in-app purchases, starting at $4.99 per year. QR Pro asks for nothing beyond the download.

ExtCalc ships an update every 5 months, QR Pro weekly. The most recent releases landed on September 25, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | ExtCalc | QR Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (29K ratings)](https://appshunter.io/ios/app/qr-pro-code-reader-and-creator/id1013912824/reviews)** |
| Number of ratings | — | **29K** |
| Positive reviews | 0.0% of reviews | **72.6% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 months | **Weekly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 7 MB | 37 MB |
| Requires iOS | 18.7 | **15.0** |
| Devices | iPhone, iPad, Mac, Apple TV, Apple Watch, Vision Pro | **iPhone, iPad, iPod, Mac, Apple TV, Apple Watch, Vision Pro** |
| Age rating | 4+ | 4+ |
| Developer | [Matthias Weber](https://appshunter.io/developer/386132193) | [Crypto Inc.](https://appshunter.io/developer/980289004) |

## What reviewers say

### ExtCalc

[App page](https://appshunter.io/ios/app/extcalc/id386132190)

This scientific calculator offers a colorized text view for formulas, allowing for individual calculation sheets and easy memorization of results. It features a customizable constants pool, VAT calculator, and cloud synchronization for seamless use across devices. Accessibility and team collaboration are also emphasized.

**Highlights:** Colorized formula view, Individual calculation sheets, Memorize results, Customizable constants pool, VAT calculator, Cloud synchronization, Apple Watch app

**Features:** Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Yearly Subscription | $4.99 | per year |
| Printing | $0.99 | one-time |


### QR Pro

[App page](https://appshunter.io/ios/app/qr-pro-code-reader-and-creator/id1013912824)

This application provides fast and secure scanning of QR codes and various barcode formats. It offers an ad-free and privacy-focused experience with no hidden costs or data collection. Simply open the app and point your camera at the code to scan.

**Highlights:** Ad-free scanning, Privacy-focused, No in-app purchases, Supports multiple code types, Intuitive interface

**Features:** Safari Extension, Apple Watch app

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 🚀 Instant scanning
- 💡 Supports various code types
- 🔒 No privacy data collected
- 🤗 Friendly and helpful staff

**What reviewers complain about**

- 🐛 Occasional scanning issues
- 🤔 Confusing reviews unrelated to the app
- 💰 Concerns about data collection and in-app purchases

**Reported bugs**

- Freezing or crashing on some devices
- Inability to read or open scanned codes

**Requested features**

- Save scanned QR codes
- More advanced scanning capabilities


## Frequently asked questions

### Is ExtCalc free?

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

### Is QR Pro free?

QR Pro is free to download, with no in-app purchases.

### Do ExtCalc or QR Pro have ads?

Neither ExtCalc nor QR Pro shows ads.

### Which is updated more often, ExtCalc or QR Pro?

ExtCalc ships an update every 5 months, and QR Pro weekly. Most recently, ExtCalc was updated on September 25, 2026 and QR Pro on October 13, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*