# Steam: Tables & Properties — Thermodynamic and Transport > Calculates thermodynamic and transport properties of water and steam. (iPhone/iPad app by Viewpoint Photography.) - Source: https://appshunter.io/ios/app/steam-tables-and-properties/id301272735 (this page in markdown: same URL + `.md`) - Developer: [Viewpoint Photography](https://appshunter.io/developer/300820573) - Category: Utilities, Reference - Price: $4.99 (on sale, was $9.99) - Rating: 4.20/5 from 14 App Store ratings · 6 written reviews indexed - Age rating: 4+ - Requires: iOS 26.0 · 11 MB - Languages: American English - Released: 2009-01-08 - Data updated: 2026-08-08 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/steam-tables-and-properties/id301272735/reviews.md ## What is Steam? Steam calculates the thermodynamic and transport properties of water and steam for subcooled, saturated, two-phase, superheated, and supercritical conditions. Fast, accurate, and comprehensive. Three formulations are included for property calculations: - IAPWS Industrial Formulation 1997 for the Thermodynamic Properties of Water and Steam (IF97) - IAPWS Formulation 1995 for the Thermodynamic Properties of Ordinary Water Substance for General and Scientific Use (SF95) - 1967 IFC-Formulation for Industrial Use (IFC-67) Although the 1997 industrial formulation has been available for almost 30 years, the 1967 industrial formulation, commonly known as the ASME steam tables, is still widely used in some industries. Switch instantly between imperial (psia, F, Btu/lbm, etc.) or metric (kPa, C, kJ/kg, etc.) engineering units. Customize those sets of units for your needs. With just one tap, convert calculated outputs from one set of units to the other. A third set of units can be defined, and a units conversion calculator is also provided. Save calculations to review later or to compare differences between the formulations. On the settings tab, change the number of significant digits in the output, customize the engineering units, modify the font size, and select the theme for the app. Select one of the functions with these inputs: p,t - pressure and temperature p,h - pressure and specific enthalpy p,s - pressure and specific entropy h,s - specific enthalpy and specific entropy p,x - pressure and steam quality (vapor fraction) t,x - temperature and steam quality (vapor fraction) to calculate: - Specific enthalpy - Specific entropy - Specific internal energy - Specific volume - Density - Specific isobaric heat capacity - Specific isochoric heat capacity - Isentropic exponent - Speed of sound - Thermal conductivity - Dynamic viscosity - Kinetic viscosity - Prandtl number - Surface tension For saturated and two-phase (wet steam) conditions: - Saturation temperature - Saturation pressure - Saturated liquid, saturated vapor, and two-phase properties - Specific enthalpy - Specific enthalpy heat of vaporization - Specific entropy - Specific entropy of vaporization - Specific internal energy - Specific volume - Density For saturated liquid and saturated vapor conditions: - Specific isobaric heat capacity - Specific isochoric heat capacity - Isentropic exponent - Speed of sound - Thermal conductivity - Dynamic viscosity - Kinetic viscosity - Prandtl number Standards implemented in Steam: For the IAPWS-IF97 and IAPWS-95 calculations: - Revised Release on the IAPWS Industrial Formulation 1997 for the Thermodynamic Properties of Water and Steam, August 2007. - Revised Release on the IAPWS Formulation 1995 for the Thermodynamic Properties of Ordinary Water Substance for General and Scientific Use, September 2018 - Release on the IAPWS Formulation 2011 for the Thermal Conductivity of Ordinary Water Substance, September 2011 - Release on the IAPWS Formulation 2008 for the Viscosity of Ordinary Water Substance, September 2008 - Revised Release on the Surface Tension of Ordinary Water Substance, June 2014. - Revised Release on the Pressure along the Melting and Sublimination Curves of Ordinary Water Substance, September 2011 For the IFC-67 calculations: - A Formulation for the Thermodynamic Properties of Ordinary Water Substance, International Formulation Committee, February 1967. - Release on The IAPS Formulation 1985 for the Thermal Conductivity of Ordinary Water Substance, International Association for the Properties of Steam, September 1984. - Release on The IAPS Formulation 1985 for the Viscosity of Ordinary Water Substance, International Association for the Properties of Steam, September 1984. - Release on The Surface Tension of Water Substance, International Association for the Propererties of Steam, September 1975. ## Key features - Thermodynamic property calculations - Transport property calculations - Supports IF97 and IFC-67 formulations - Unit conversion (imperial/metric) - Save and compare calculations - Input range validation ## Recent user reviews (6 of 6) All indexed reviews: https://appshunter.io/ios/app/steam-tables-and-properties/id301272735/reviews.md ### 5/5 — Works great *2012-09-19* Only complaint is I would like drop down menus to select inputs instead of the five pairs. ### 5/5 — Excellent App, great for interpolation *2010-01-28* Excellent App, great for interpolation, saves a lot of time doing homework and looking up steam tables! ### 5/5 — Awsome *2010-01-06* Perfect for chemical engineering students, cant wait to see the future upgrades on how more efficient it can be ### 4/5 — Elegant, useful, bargain *2009-05-12* As a senior engineer who relies on steam tables, I find this the most useful app on the iPhone--and that says a lot. Haven't run into innacuracy in u yet, but I don't use u much anyway. I recommend it highly. ### 4/5 — Superheat *2009-05-09* Please update this app to include the amount of Superheat, yes I can subtract it myself but why ? It's in the Steam Tables book and should be in here too. Other than that a great app, thanks. ### 2/5 — Incorrect values for u *2009-03-08* The program does not calculate internal energy correctly, at least for superheated steam. Other parameters seem to be OK. The web version appears to give the correct values, but the ipod/iphone app does not. Please correct and upload an update. ## Frequently asked questions about Steam ### What are the main formulations used by Steam? Steam utilizes both the IAPWS Industrial Formulation 1997 (IF97) and the 1967 IFC-Formulation for Industrial Use (IFC-67) for its property calculations. This ensures compatibility with both modern and older industry standards. ### Can I save my calculations in Steam? Yes, you can save your calculations to review them later or to compare differences between the IF97 and IFC-67 formulations. This feature is useful for tracking progress and analyzing results. ### Does Steam support different units of measurement? Absolutely. Steam allows you to switch instantly between imperial (psia, F, Btu/lbm, etc.) and metric (kPa, C, kJ/kg, etc.) engineering units. You can also customize these unit sets and convert outputs between them. ### What kind of properties can Steam calculate? Steam can calculate a wide range of properties including specific enthalpy, entropy, internal energy, volume, density, heat capacity, isentropic exponent, speed of sound, thermal conductivity, dynamic viscosity, kinetic viscosity, Prandtl number, and surface tension for various steam conditions. ### How does Steam handle out-of-range input values? When input values fall outside the allowable range for calculations, Steam will display this information to the user. This helps prevent errors and ensures the accuracy of the results. ### What is the age rating for Steam? Steam has an age rating of 4+, making it suitable for a wide range of users. The app's content is generally appropriate for children and adults. ### On which devices can I use Steam? Steam is supported on both iPhone and iPad devices. This allows for flexibility in where and how you perform your property calculations. ### How often is Steam updated? The latest version of Steam is 2.0.0, which was last updated on April 14, 2026. While this date is in the future, it indicates ongoing development and support for the application. ## Version history (last 5 releases) ### 2.1.0 — 2026-08-06 - Added properties for IAPWS Formulation 1995 for the Thermodynamic Properties of Ordinary Water Substance for General and Scientific Use - Added degrees subcooling to output - ### 2.0.0 — 2026-04-14 - Updated to IOS 26 using SwiftUI - Added option to save calculations so you can compare results from multiple calculations - Added a custom engineering units set, and made all the engineering units sets customizable for your application - Added settings for significant digits, font size, theme, and formulation selection - Improved input value range checks - Fixed some bugs in the calculation of transport properties - Added a function for specific enthalpy and specific entropy input for calculations with the IF97 formulation - Updated the viscosity calculation based on the IAPWS Formulation 2008 for the Viscosity of Ordinary Water Substance - Updated the thermal conductivity calculation based on the IAPWS Formulation 2011 for the Thermal Conductivity of Ordinary Water Substance ### 1.0.3 — 2009-04-11 Version 1.0.3 - Fixed problem with some numbers being displayed as phone number links on iPhones Version 1.0.2 - Fixed conversion factor for internal energy calculation in 1967 steam tables - Fixed incorrect calculation in 1967 steam tables when pressure and temperature inputs were identical Version 1.0.1 - Fixed 'out of range' error for pressure and temperature inputs near the saturation line ### 1.0.2 — 2009-03-22 No release notes. ### 1.0.1 — 2009-02-04 No release notes. ## Related topics [steam tables lite](https://appshunter.io/ios/topics/steam-tables-lite) · [steam tables pro](https://appshunter.io/ios/topics/steam-tables-pro) · [international steam tables](https://appshunter.io/ios/topics/international-steam-tables) --- *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 2026-08-08.*