Differential Pressure vs Instrument Toolbox
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Differential Pressure
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The βDifferential Pressureβ transmits the data via audio jack. Currently, this App can be used on Kane Device, which measures the pressure. This app displays the graph of the measured data and is able to send the data via email.
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/mΒ³ 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/mΒ³ 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: Differential Pressure at Free against Instrument Toolbox's $1.99. Instrument Toolbox's advantage is update cadence (weekly vs every 4 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Differential Pressure is free to download; Instrument Toolbox costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Differential Pressure ships an update every 4 months, Instrument Toolbox weekly. The most recent releases landed on September 17, 2026 and September 23, 2026 respectively.
| Parameter | Differential Pressure | Instrument Toolbox |
|---|---|---|
| Price | Free β better | $1.99 |
| Positive reviews | β | 100.0% of reviews |
| Update frequency | Every 4 months | Weekly β better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | β | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 β better | 13.0 |
| Further details β not scored | ||
| Size | 4 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Kane Asia Inc. | η«ε¨ η |
In-app purchases
Differential Pressure
No in-app purchases
Instrument Toolbox
No in-app purchases
Questions
Is Differential Pressure free?
Is Instrument Toolbox free?
Do Differential Pressure or Instrument Toolbox have ads?
Which is updated more often, Differential Pressure or Instrument Toolbox?
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