Phymetrix Calculator vs Instrument Toolbox
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Phymetrix Calculator
This utility app simplifies moisture calculations by converting between various units and determining dew points and partial water vapor pressures. It's pre-programmed with essential scientific equations for common gases, making complex calculations straightforward.
- Moisture unit conversion
- Dew point calculation
- Partial water vapor pressure calculation
- Pre-programmed scientific equations
- Supports common gases
- User-friendly interface
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The Phymetrix Moisture Calculator will allow you to quickly convert between different moisture concentration units as well as easily obtain dew points and partial water vapor pressures at different total pressures. The Dew Point Calculator is pre-programmed with all the pertinent dew point equations from Physical Chemistry and Thermodynamics and the molecular weights of the most commonly used gases. All you have to do is plug in your numbers; science made simple! Keywords: moisture units conversion calculator, dewpoint units conversion calculator, unit conversion, moisture calculator, dew point calculator, moisture conversion, ppm to dew point conversion calculator, ppm/dewpoint to lbs-H2O conversion calculator
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.
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Verdict
The clearest difference is price: Phymetrix Calculator at Free against Instrument Toolbox's $1.99. Instrument Toolbox's advantage is update cadence (weekly vs every 52 months). On review sentiment, 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
Phymetrix Calculator is free to download; Instrument Toolbox costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Phymetrix Calculator ships an update every 52 months, Instrument Toolbox weekly. The most recent releases landed on October 6, 2026 and October 9, 2026 respectively.
| Parameter | Phymetrix Calculator | Instrument Toolbox |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 2 — better | — |
| Update frequency | Every 52 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 14.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Alexander Bedrossian | 立娜 王 |
Customer experience
Phymetrix Calculator
Instrument Toolbox
In-app purchases
Phymetrix Calculator
No in-app purchases
Instrument Toolbox
No in-app purchases
Questions
Is Phymetrix Calculator free?
Is Instrument Toolbox free?
Do Phymetrix Calculator or Instrument Toolbox have ads?
Which is updated more often, Phymetrix Calculator or Instrument Toolbox?
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