# Instrument Toolbox — Smart Calculator for Engineers > Industrial control and instrumentation calculator for engineers. (iPhone/iPad app by 立娜 王.) - Source: https://appshunter.io/ios/app/instrument-toolbox/id6698856248 (this page in markdown: same URL + `.md`) - Developer: [立娜 王](https://appshunter.io/developer/1761096632) - Category: Utilities, Productivity - Price: $1.99 (on sale, was $2.99) - Age rating: 4+ - Requires: iOS 13.0 · 8 MB - Languages: Korean, German (Germany), American English, Japanese, Chinese (Simplified, China), Chinese (Traditional, Hong Kong SAR China), Brazilian Portuguese - Released: 2025-01-14 - Data updated: 2026-09-03 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/instrument-toolbox/id6698856248/reviews.md ## What is Instrument Toolbox? 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. ## Key features - 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 ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/instrument-toolbox/id6698856248/reviews.md ### 5/5 — 不错哟 *2025-01-17* 这个工具箱不错，适合工厂打工的我。还希望完善下更多实用的工具功能 ## Frequently asked questions about Instrument Toolbox ### What is Instrument Toolbox? Instrument Toolbox is a professional calculation tool for industrial control, automation, and instrumentation engineers. It provides features like unit conversion, gas concentration calculations, and pipeline flow analysis to aid in engineering design and field debugging. ### What types of unit conversions does Instrument Toolbox offer? Instrument Toolbox offers conversions for pressure (including MPa, kPa, bar, psi), volume, temperature, length, and mass. It also includes specialized calculations for gas concentration and saturated steam properties. ### Can Instrument Toolbox calculate pipeline flow and velocity? Yes, Instrument Toolbox includes a pipeline flow and velocity calculator. It is applicable for both gas and liquid media and can calculate velocity, flow, and diameter by considering temperature, pressure, and other operating conditions. ### How does Instrument Toolbox handle gas concentration conversions? The app features a PPM to mg/m³ converter that supports custom molecular weights and includes a quick selection for common gases. It also offers environmental temperature and pressure compensation for accurate conversions. ### Is Instrument Toolbox suitable for field use? Yes, Instrument Toolbox is designed for both field engineering and design office scenarios. Its clean interface and real-time calculation results make it easy to use for on-site adjustments and checks. ### What is the price of Instrument Toolbox? Instrument Toolbox is a paid application, available for $1.99. This one-time purchase grants access to all its professional engineering calculation features. ### Does Instrument Toolbox have ads? No, Instrument Toolbox does not contain advertisements. As a paid utility app, it provides an ad-free experience for its users. ### On which devices can I use Instrument Toolbox? Instrument Toolbox is compatible with iPhones and iPads. It is designed for users on Apple's mobile and tablet platforms. ## Version history (last 2 releases) ### 1.0.1 — 2025-01-21 1 Supports multiple languages ### 1.0 — 2025-01-15 No release notes. ## Apps similar to Instrument Toolbox | App | Rating | Price | Category | | --- | --- | --- | --- | | [PIDTune](https://appshunter.io/ios/app/pidtune/id1045174726) | 5.0 (2) | $4.99 | Utilities | | [Electric Motors Speed Calc](https://appshunter.io/ios/app/electric-motors-speed-calc/id1447766874) | 4.0 (8) | $2.99 | Utilities | | [E仪表](https://appshunter.io/ios/app/e/id1637254387) | — | Free | Utilities | | [SEO Meta for Safari](https://appshunter.io/ios/app/seo-meta-for-safari/id6742468020) | — | $2.99 | Utilities | | [视力启蒙](https://appshunter.io/ios/app/id6737162932) | — | Free | Utilities | | [LTH Discover](https://appshunter.io/ios/app/lth-discover/id6476649403) | — | Free | Utilities | ## More apps by 立娜 王 - [SunSim Building-Sun tracker](https://appshunter.io/ios/app/sunsim-building-sun-tracker/id6479755082) - [TC-RTD Reference](https://appshunter.io/ios/app/tc-rtd-reference/id6504454500) - [PID Controller Simulation](https://appshunter.io/ios/app/pid-controller-simulation/id6612009107) - [PaintMixing - Color Assistant](https://appshunter.io/ios/app/paintmixing-color-assistant/id6741551966) - [PDF Image Extract-PDF to Image](https://appshunter.io/ios/app/pdf-image-extract-pdf-to-image/id6743068462) All apps by 立娜 王: https://appshunter.io/developer/1761096632 ## Related topics [hytrol toolbox](https://appshunter.io/ios/topics/hytrol-toolbox) · [instrumentation](https://appshunter.io/ios/topics/instrumentation) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-03.*