木木仪表 vs Instrument Toolbox
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
木木仪表
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福尔德ECU,黄龙600用ECU检测仪专用APP,让你摆脱电脑束缚,直接用手机来获得各种ECU数据,更稳定,更方便,代替PC HUD软件非常稳定,可以长期插在诊断口,熄火不耗电
Instrument Toolbox
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.
- 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
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Industrial Control & Instrumentation Toolbox - Your Smart Industrial Calculator A professional calculation toolbox designed for industrial control, automation, and instrumentation engineers. Whether for field debugging or engineering design, it helps you quickly complete various professional calculations. Core Features: PPM to mg/m³ Converter: Gas concentration unit conversion, supports custom molecular weight, built-in quick selection of common gas molecular weights, with environmental temperature and pressure compensation Unit Converter: Covers easy conversion of industrial measurement units including: Pressure (8 units including MPa, kPa, bar, psi, etc.) Volume Temperature Length Mass Saturated Steam Calculator: Input temperature to obtain saturated steam pressure, or input pressure to calculate saturated steam density, meeting steam system design requirements Flange Level Migration: Supports single/dual flange level calculations, with inputs for medium density, flange distance, and other parameters for precise level measurement calibration Pipeline Flow & Velocity Calculator: Applicable for both gas and liquid media, integrates velocity calculation, flow calculation, and diameter calculation, incorporating temperature, pressure, and other operating conditions Key Features: Clean and intuitive interface, easy operation Real-time calculation results Supports standard and operating condition conversions Built-in reference values like standard atmospheric pressure Suitable for both field engineering and design office scenarios This app is an essential professional tool for industrial automation, significantly improving engineering calculation efficiency. Target Users: Automation Engineers, Instrumentation Engineers, Process Engineers, Equipment Engineers, and other industrial control professionals.
Screenshots
Verdict
The clearest difference is price: 木木仪表 at Free against Instrument Toolbox's $1.99. 木木仪表 also leads on iOS requirement (8.0 vs 13.0). Instrument Toolbox's advantage is update cadence (weekly vs every 5 months). On ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
木木仪表 is free to download; Instrument Toolbox costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
木木仪表 ships an update every 5 months, Instrument Toolbox weekly. The most recent releases landed on November 2, 2026 and November 8, 2026 respectively.
| Parameter | 木木仪表 | Instrument Toolbox |
|---|---|---|
| Price | Free — better | $1.99 |
| Positive reviews | — | 100.0% of reviews |
| Update frequency | Every 5 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Paid |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 8.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 17 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | 海林 严 | 立娜 王 |
In-app purchases
木木仪表
No in-app purchases
Instrument Toolbox
No in-app purchases









