Along comes a great IOS app that really blows me away in terms of usability AND functionality.

AND, It works on IOS 7!!!!!

As any RT knows, there are times where you just need that 1 equation of calculation at work that you either forgot or just don’t have the time to figure out.

Well, Ronnald Grant has just done that with RTCalc.

Let the developer/programmer introduce the app:



Hello, My name is Ronnald Grant. I have been in the respiratory therapy field for over 25 years. I’ve had the pleasure as a student to work with the guy who invented the inline suction catheter back in 1984 at St. Joseph’s Hospital in Tacoma Wa. Since then I’ve always had the desire to give back to hospitals and to respiratory therapist.

During the last 2.5 years i’ve spent a great deal of time creating an app for respiratory therapist. The app is called RTcalc and is available for the iPhone, with an Android version coming out soon. You can check it out


I accept ideas, requests, and critical reviews which serves to help make RTcalc better. Once you have RTcalc you can enter reviews or requests by clicking on the [ ? ] – help button for an easy to fill out email feedback form.

Ronn Grant RCP/Programmer



Here are some screenshots in action:





 About the App and Developer. Excellent and easy way to send feedback. It opens up your mail app for you to send ideas, equation requests, etc…









Easy Duration of flow calc and timer !



Some great equations


1 Respiratory



2 Cardiac and Tools



3 Respiratory Medications Cheat Sheet




4 Help Menu


I have found this IOS app very easy to use. The developer states in an email that new equations are easy to add, so hopefully updates will come fast and frequent from feedback. Personally, I’d like to see more PFT and neonatal information and I am surprised the the Anoon Gap calculation was NOT included. I did use the internal feedback method to suggest these items earlier today but have not heard back yet.

It is quite pricey compared to the usual $0.99 cents we are accustomed to, however the app does provide such a wealth of info and tools that it would take you many more apps like this to fulfill the majority of your requirements clinically. That is, if they even exist.

Great app, and in retrospect such a good value for the money and an absolute MUST HAVE!!!


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