Chemical Engineering 101 app has over 60 pages of calculations and useful topics. It can be used as reference for an engineering student or quick review for someone in the field. The program currently has information on areas including: Bernoulli equation, orifice, pressure drop, Pumps, Ideal Gas Law, Compressor, Heat Exchanger, LMTD, Valve, Reynolds, Molecular Weight, Velocity calculation, Unitless Parameters, Reference items, Bubble/Dew Point, Antoine Equation, Arrhenius, Friction Factors, Conversions, Organic Chemistry Information – Alkane, Alkene, Acid, Alcohol, Keytone, Ether, Amide, Amines and Aromatics. The list will continue to grow as we add features to the program.

What's New

Version 4.3.0

Bubble Point, Dew Point calculation, updated functionality on conversions, beta and Reynolds number included on orifice plate calculation page, Dynamic Viscosity, Kinematic Viscosity, density conversion calculation

Ratings and Reviews

Great app for us Chem E's


I love your app. Here are a few things that will help me out: 1) include a conversion table or interactive equation for converting temperature given in °F or °C into °K; 2a) tabular data for some common conversions like the weight of fresh water / sea water per gallon, with temp dependent variations; 2b) tabular data/calculation for steam at varying temperatures & pressures; 3) ability to alter the units for your ideal gas law equation, but still run the equation; 4) augment your velocity calculation to include heat transfer / fluid flow loss calculations/constants for pipe length, elbows and angular splits (T's and Y's); and 5) add Fick's Law to you equation list, along with an explanation of terms and an example.

Please take my suggestions as only constructive in nature. I've long been waiting for a tool like this, so I want to help make it even better. M.Marcus, BS, MS, PE

Thank you


Finally, there is an app that I can use as a reference for school. I look forward to the updates to help with my other classes. - Easy to use and definitely worth the few bucks. Thanks again.

Chemical Engineer

Steve - engineer

I picked up this app while searching for a handy chemical engineering app. It is extremely loaded with useful features, equations and references. Additionally, the programmer continues to add new features regularly. Highly recommended!


Walczak and Walczak LLC
13.6 MB
Requires iOS 7.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© 2014 Walczak and Walczak LLC


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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