# 计算器 vs QR Barcode Creator & Scanner

The clearest difference is in-app purchases: 计算器 at none against QR Barcode Creator & Scanner's 3. 计算器 also leads on iOS requirement (14.0 vs 17.0). QR Barcode Creator & Scanner's advantage is update cadence (every 4 days vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. QR Barcode Creator & Scanner sells 3 in-app purchases, starting at $6.99 per 7 days. 计算器 asks for nothing beyond the download.

计算器 ships an update every 2 months, QR Barcode Creator & Scanner every 4 days. The most recent releases landed on October 7, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | 计算器 | QR Barcode Creator & Scanner |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 days** |
| Monetization | Free | — |
| Size | 10 MB | 19 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Beijing iDOTOOLS Technology Co., Ltd](https://appshunter.io/developer/1627204739) | [Beijing Anxinzhitong Technology Co., Ltd](https://appshunter.io/developer/1522290222) |

## What reviewers say

### 计算器

[App page](https://appshunter.io/ios/app/id6470794350)

This app offers advanced scientific and standard calculations with a clean interface. It supports complex functions, trigonometric operations, and allows for easy manipulation and annotation of calculations. Keep track of your entire computation history with clear visual cues.

**Highlights:** Standard and scientific calculations, Trigonometric, exponential, and logarithmic functions, Drag-and-drop results for subsequent calculations, Tagging and annotation of calculations, Full calculation history with step-by-step view, Intuitive and simple interface

**Features:** macOS Compatibility

**In-app purchases:** none


### QR Barcode Creator & Scanner

[App page](https://appshunter.io/ios/app/qr-barcode-creator-and-scanner/id6793032935)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $6.99 | per 7 days |
| Premium Yearly - 3 Days Free | $69.99 | per year |
| Premium Lifetime | $89.99 | one-time |


## Frequently asked questions

### Is 计算器 free?

计算器 is free to download, with no in-app purchases.

### Is QR Barcode Creator & Scanner free?

QR Barcode Creator & Scanner is free to download, with in-app purchases available.

### Do 计算器 or QR Barcode Creator & Scanner have ads?

Neither 计算器 nor QR Barcode Creator & Scanner shows ads.

### Which is updated more often, 计算器 or QR Barcode Creator & Scanner?

计算器 ships an update every 2 months, and QR Barcode Creator & Scanner every 4 days. Most recently, 计算器 was updated on October 7, 2026 and QR Barcode Creator & Scanner on October 13, 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.*