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Screenshots

  • ROL Assistant screenshot 1
  • ROL Assistant screenshot 2
  • ROL Assistant screenshot 3
  • ROL Assistant screenshot 4

About ROL Assistant

ROL Sia: Sia virtual advisor on Refining Online®. Ask Sia your refining question for answers from the Refining Online Q&A. Unit Conversion: Length, Area, Volume, Mass, Density, Pressure, Energy, Power, Temperature, Flowrate, Viscosity, Specific Energy, Heat Flux, Heat Transfer Coefficient, Thermal Conductivity... Steam Properties: Enthalpy, Density, Heat Capacity, Viscosity, Thermal Conductivity of saturated steam, water, and superheated steam. Line Pressure Drop: Single phase line pressure drop calculation for different pipe sizes and materials in English or Metric units.

What’s new

Version 1.0.31 · Updated June 26, 2026

General Improvements.

App privacy

The developer, Astron International, Inc., reported these privacy practices to Apple.

Data Not Collected

The developer does not collect any data from this app.

Alternatives to ROL Assistant

Looking for apps like ROL Assistant? Here are 6 similar apps on the App Store. The highest rated is Haverly's PetroCalc (4.7/5), and 5 of the 6 are free to download.

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