# ChemE Calculator — Engineering tools and searches > Chemical engineering calculations, unit conversions, and chemical database access for mobile. (iPhone/iPad app by Bryan Tiedemann.) - Source: https://appshunter.io/ios/app/cheme-calculator/id1329240890 (this page in markdown: same URL + `.md`) - Developer: [Bryan Tiedemann](https://appshunter.io/developer/1315321665) - Category: Productivity, Education - Price: Free - Rating: 4.89/5 from 9 App Store ratings · 2 written reviews indexed - Age rating: 4+ - Requires: iOS 11.0 · 15 MB - Languages: English - Released: 2017-12-28 - Data updated: 2026-06-10 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/cheme-calculator/id1329240890/reviews.md ## What is ChemE Calculator? ChemE Calculator is a powerful tool with a simple interface for running VLE and steam table calculations on your iPhone or iPad, or for doing unit conversions. Ever been working a problem with your colleague, the path to real answers illuminated before you, when suddenly you need to do a quick dewpoint calc or check the heavies content in a vapor phase? How about working a startup and needed to know how much duty your steam turbine can achieve with a lower pressure source? Ever been in a meeting with the VP who's asking for sources of product loss and find yourself wishing you included the composition for the knockout drum bottoms stream in your slides? Need to look up the structure and molecular weight of beta-carotene or any other compound? Instead of leaving the productive groove to go back to your desk, log into your computer, creak open the process simulation software, define the simulation, run the simulation and then sift through reams of output to get your answer, now you can reach into your pocket and run a few quick cases on your iPhone or iPad! Its tabular user interface draws upon the familiar look and feel of iOS. To help you get off the ground, press the circled "i" icon at the top right corner of the screen to access helpful view-specific information. When you're done with your calc, you can email the results to yourself or anyone else! The calculation tools available in this release are: - Flash VLE - Bubble P - Dew P - Bubble T - Dew T - Generalized steam tables - Saturated vapor/liquid steam tables - Wet steam properties - Subcooled liquid steam tables - Superheated vapor steam tables - Supercritical fluid steam tables - Unit Conversion - Chemical Database Search (PubChem) There are also pictures of kittens in case you need a little break. Units for different types of input can be selected and changed when defining feed properties, and concentrations can be entered as either mole fraction or mass fraction. Multicomponent mixtures are rigorously modeled with the Peng-Robinson equation of state, but rapid convergence is facilitated by lean graphics and an optimized backend that starts crunching numbers as soon as you hit the button. The current version includes data for 47 different components: 45 hydrocarbons (C1-C10) plus acetonitrile and N,N-dimethylformamide. Binary interaction parameters are included for 57 selected pairs. Steam table calculations use the IAPWS-IF97 equations, representing the most up-to-date steam thermodynamics model available today. Output data can be provided in either metric or US units based on your preference. After running your calcs, you can email the results to the address of your choice. Emails contain input data as well as calculation results, and are transmitted in simple HTML format for readability, compatibility and ease of reference. Or, you can just share your favorite kitten picture with friends. ## Key features - VLE calculations (Flash, Bubble P/T, Dew P/T) - Generalized and specific steam table calculations - Unit conversion tool - Chemical database search (PubChem) - Email results export - Support for multicomponent mixtures with Peng-Robinson EOS ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/cheme-calculator/id1329240890/reviews.md ### 5/5 — Unit Conversion too! *2018-02-01* By far the update most helpful since the Kitten Viewer is the Unit Conversion capability. It is great to have all these features in one handy app! ### 5/5 — Kitten pics! *2018-01-16* The app itself is awesome and useful, especially in the lab, but the kitten pics take it to the next level. ## Frequently asked questions about ChemE Calculator ### What types of VLE calculations does ChemE Calculator offer? ChemE Calculator supports Flash VLE, Bubble Point Pressure, Dew Point Pressure, Bubble Point Temperature, and Dew Point Temperature calculations. It rigorously models multicomponent mixtures using the Peng-Robinson equation of state. ### What steam table data is available in ChemE Calculator? The app provides access to generalized steam tables, saturated vapor/liquid steam tables, wet steam properties, subcooled liquid steam tables, and superheated vapor steam tables. It uses the IAPWS-IF97 equations for accurate thermodynamic modeling. ### Can I perform unit conversions with ChemE Calculator? Yes, ChemE Calculator includes a comprehensive unit conversion tool. You can select and change units for various inputs, and output data can be provided in either metric or US units. ### Does ChemE Calculator have a chemical database? Yes, it features a chemical database search function that utilizes PubChem. You can look up the structure and molecular weight of various compounds. ### How can I share my calculation results from ChemE Calculator? You can email your calculation results directly from the app. The emails include both input data and calculation results in simple HTML format for easy readability and reference. ### What devices is ChemE Calculator compatible with? ChemE Calculator is available for iPhone and iPad. It is designed with a tabular user interface that draws upon the familiar look and feel of iOS. ### Does ChemE Calculator have ads? No, ChemE Calculator is ad-free. The app is completely free to download and use without any advertisements. ### How often is ChemE Calculator updated? The latest version of ChemE Calculator is 4.0.3, last updated on April 5, 2018. While updates may not be frequent, the app provides a stable set of core engineering tools. ## Version history (last 5 releases) ### 4.0.3 — 2018-04-05 This app has been updated by Apple to display the Apple Watch app icon. Bug fixes in unit conversion calculator. ### 4.0.2 — 2018-03-09 Uses more secure https protocol for NIST webbook lookups. ### 4.0.1 — 2018-02-12 Added support for spaces in compound name queries when using the Chemical Database Search tool. ### 4.0 — 2018-02-05 Added a Chemical Database Search tool for looking up properties of millions of compounds. Streamlined the interface of the Unit Conversion tool to make using it more intuitive. Fixed a bug so the iPad can now use the unit converter, and added more mass flowrate units to support facilities planning-level assessments. ### 3.0 — 2018-01-29 Added a unit conversion calculator with 29 different types of units, each type containing several different units that can be interconverted. ## Apps similar to ChemE Calculator | App | Rating | Price | Category | | --- | --- | --- | --- | | [iSpartan](https://appshunter.io/ios/app/ispartan/id534726646) | 3.3 (12) | $19.99 | Productivity | | [Two Phase Separator Lite](https://appshunter.io/ios/app/two-phase-separator-lite/id1347623045) | — | Free | Productivity | | [DWSIM Simulator](https://appshunter.io/ios/app/dwsim-simulator/id1162110266) | 4.6 (101) | Free | Productivity | | [Merox C.O.A.C.H.](https://appshunter.io/ios/app/merox-coach/id1470356685) | — | Free | Productivity | | [LabLog](https://appshunter.io/ios/app/lablog/id1376329880) | 4.0 (4) | Free | Productivity | | [ASHRAE Duct Fitting Database](https://appshunter.io/ios/app/ashrae-duct-fitting-database/id405131130) | 2.0 (1) | $9.99 | Productivity | ## Related topics [smeltodynamics](https://appshunter.io/ios/topics/smeltodynamics) --- *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 2026-06-10.*