# CALC Smart Calculator ± vs Qr Code Reader & Scanner ZapQR

The clearest difference is review sentiment: CALC Smart Calculator ± at 87% against Qr Code Reader & Scanner ZapQR's 14%. CALC Smart Calculator ± also leads on rating (4.8 vs 4.4) and ratings volume (2.4K vs 100). Qr Code Reader & Scanner ZapQR's advantage is iOS requirement (15.4 vs 17.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. CALC Smart Calculator ± sells 4 in-app purchases, starting at $0.99 per 3 months and Qr Code Reader & Scanner ZapQR sells 3 in-app purchases, starting at $2.29 per 7 days. Whichever you choose, the download price is not the number that matters.

CALC Smart Calculator ± holds the better App Store score, 4.8 against 4.4. That said, the two scores are not equally well evidenced: CALC Smart Calculator ± has 2.4K ratings behind it against 100, so its average is the more settled of the two. Written reviews point the same way: 87% of CALC Smart Calculator ±'s written reviews are positive against 14% of Qr Code Reader & Scanner ZapQR's.

CALC Smart Calculator ± ships an update fortnightly, Qr Code Reader & Scanner ZapQR weekly. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | CALC Smart Calculator ± | Qr Code Reader & Scanner ZapQR |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (2.4K ratings)](https://appshunter.io/ios/app/calc-smart-calculator/id576675190/reviews)** | [4.4 (100 ratings)](https://appshunter.io/ios/app/qr-code-reader-and-scanner-zapqr/id6449176657/reviews) |
| Number of ratings | **2.4K** | 100 |
| Positive reviews | **87.2% of reviews** | 14.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 16 MB | 18 MB |
| Requires iOS | 17.0 | **15.4** |
| Devices | **iPhone, iPad, Mac, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [QApps LLC](https://appshunter.io/developer/395652397) | [Firebolt Online, LLC](https://appshunter.io/developer/1546760418) |

## What reviewers say

### CALC Smart Calculator ±

[App page](https://appshunter.io/ios/app/calc-smart-calculator/id576675190)

This app offers a versatile calculator experience with basic, scientific, and advanced modes. It features real-time results, unit conversions, custom functions, and a shareable history. Optimized for various Apple devices, it's designed for ease of use by students, professionals, and scientists.

**Highlights:** Real-time results, Unit and currency conversions, Custom functions and constants, Shareable calculation history, Landscape mode with tape-roll, Gratuity calculator

**Features:** Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Quarterly Supporter | $0.99 | per 3 months |
| Quarterly Supporter | $1.99 | per 3 months |
| Annual Contributor | $2.99 | per year |
| Annual Contributor | $5.99 | per year |

**What reviewers like**

- 💻 Excellent calculator functionality
- 🎨 Beautiful and clean interface
- 🔢 Displays full calculation history
- 🔍 Useful conversion tools
- 🤖 Seamless Apple Watch integration

**What reviewers complain about**

- 💰 Subscription model introduced
- 🔒 Restricted features behind paywall
- 📊 Calculation bugs and inaccuracies
- 🔄 Unnecessary UI changes frustrate users

**Reported bugs**

- Calculation errors in certain scenarios
- Forced tutorial popup on every launch
- Unreliable widget functionality

**Requested features**

- Ability to easily clear calculation history
- Option to customize button layout
- Support for entering hexadecimal numbers
- Integration with other apps and services


### Qr Code Reader & Scanner ZapQR

[App page](https://appshunter.io/ios/app/qr-code-reader-and-scanner-zapqr/id6449176657)

This app allows you to quickly scan and generate QR codes for various purposes, including website links, Wi-Fi credentials, and contact information. It offers a user-friendly interface, organizational tools, and secure on-device processing for your data.

**Highlights:** Scan QR codes for URLs, Wi-Fi, contacts, and more, Generate QR codes for websites, contacts, Wi-Fi, and text, Organize and manage scanned and generated codes, Share codes instantly via messaging, email, or other apps, Dark mode and clean user interface, On-device processing for enhanced privacy

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $2.29 | per 7 days |
| Yearly | $9.89 | per year |
| Lifetime | $19.99 | one-time |


## Frequently asked questions

### Is CALC Smart Calculator ± free?

CALC Smart Calculator ± is free to download, with in-app purchases available.

### Is Qr Code Reader & Scanner ZapQR free?

Qr Code Reader & Scanner ZapQR is free to download, with in-app purchases available.

### Which has better reviews, CALC Smart Calculator ± or Qr Code Reader & Scanner ZapQR?

CALC Smart Calculator ± is rated higher. CALC Smart Calculator ± averages 4.8 out of 5 from 2.4K ratings, while Qr Code Reader & Scanner ZapQR averages 4.4 from 100 ratings.

### Do CALC Smart Calculator ± or Qr Code Reader & Scanner ZapQR have ads?

Neither CALC Smart Calculator ± nor Qr Code Reader & Scanner ZapQR shows ads.

### Which is updated more often, CALC Smart Calculator ± or Qr Code Reader & Scanner ZapQR?

CALC Smart Calculator ± ships an update fortnightly, and Qr Code Reader & Scanner ZapQR weekly. Most recently, CALC Smart Calculator ± was updated on November 6, 2026 and Qr Code Reader & Scanner ZapQR on November 3, 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.*