# 质量安全云 vs CalculatorX

The clearest difference is in-app purchases: 质量安全云 at none against CalculatorX's 1. 质量安全云 also leads on iOS requirement (9.0 vs 15.0). CalculatorX's advantage is update cadence (every 6 days vs monthly). On price, ads and device support there is nothing between them.

Both are free to download. CalculatorX sells 1 one-off in-app purchase. 质量安全云 asks for nothing beyond the download.

质量安全云 ships an update monthly, CalculatorX every 6 days. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | 质量安全云 | CalculatorX |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (2 ratings)](https://appshunter.io/ios/app/calculatorx-smartcustomize/id6755351007/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 92.9% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 6 days** |
| Monetization | — | Free |
| Size | 176 MB | 12 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [奥琦玮信息科技(北京)有限公司](https://appshunter.io/developer/1286606601) | [学良 靳](https://appshunter.io/developer/1791452413) |

## What reviewers say

### 质量安全云

[App page](https://appshunter.io/ios/app/id1481184398)

**In-app purchases:** none


### CalculatorX

[App page](https://appshunter.io/ios/app/calculatorx-smartcustomize/id6755351007)

A fast and customizable calculator app that allows users to personalize themes, button styles, and view calculation history in real-time. Offers various display options and sound feedback for an enhanced user experience.

**Highlights:** Real-time calculation history, Customizable button colors and shapes, Multiple themes and light/dark modes, Decimal precision control, Exportable calculation history, Sound effects and voice feedback

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Premium | $2.99 | one-time |


## Frequently asked questions

### Is 质量安全云 free?

质量安全云 is free to download, with no in-app purchases.

### Is CalculatorX free?

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

### Do 质量安全云 or CalculatorX have ads?

Neither 质量安全云 nor CalculatorX shows ads.

### Which is updated more often, 质量安全云 or CalculatorX?

质量安全云 ships an update monthly, and CalculatorX every 6 days. Most recently, 质量安全云 was updated on October 29, 2026 and CalculatorX on October 30, 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.*