# 聚易联幕墙端 vs Instrument Toolbox

The clearest difference is price: 聚易联幕墙端 at Free against Instrument Toolbox's $1.99. 聚易联幕墙端 also leads on iOS requirement (11.0 vs 13.0). On ads, in-app purchases and device support there is nothing between them.

聚易联幕墙端 is free to download; Instrument Toolbox costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | 聚易联幕墙端 | Instrument Toolbox |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Weekly |
| Monetization | — | Paid |
| Size | 0 MB | 8 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [聚玻工业科技(杭州)股份有限公司](https://appshunter.io/developer/1096013818) | [立娜 王](https://appshunter.io/developer/1761096632) |

## What reviewers say

### 聚易联幕墙端

[App page](https://appshunter.io/ios/app/id6469019833)

**Features:** macOS Compatibility

**In-app purchases:** none


### Instrument Toolbox

[App page](https://appshunter.io/ios/app/instrument-toolbox/id6698856248)

A professional calculator designed for industrial control, automation, and instrumentation engineers. It offers quick conversions and calculations for gas concentration, units, steam properties, flange levels, and pipeline flow. Ideal for both field debugging and engineering design.

**Highlights:** PPM to mg/m³ conversion with compensation, Industrial unit conversion (pressure, volume, temp, etc.), Saturated steam pressure and density calculator, Flange level migration calculations, Pipeline flow and velocity calculator, Real-time calculation results

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

**In-app purchases:** none


## Frequently asked questions

### Is 聚易联幕墙端 free?

聚易联幕墙端 is free to download, with no in-app purchases.

### Is Instrument Toolbox free?

Instrument Toolbox costs $1.99, with no in-app purchases.

### Do 聚易联幕墙端 or Instrument Toolbox have ads?

Neither 聚易联幕墙端 nor Instrument Toolbox shows ads.

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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.*