iPhone App Review: Medfixation Medical Calculator

iPhone App Review: Medfixation Medical Calculator

January 6th, 2012 by

Having a touch-based smartphone on you at all times can give any professional the tools they need to make fast, informed decisions. Medfixation Medical Calculator is aimed at giving medical professionals the most commonly used medical equations and scoring tools, right at their fingertips. The app features dozens upon dozens of formulas, scores, and classifications, as well as detailed bibliographical information and references for each formula. You can create a customized list of favorite equations, browse the list of the most recently used formulas, browse them all by category, or search the complete list for the formula you are looking for.

How It Works

At its core, the app is basically a collection of calculators spread over several medical categories. The main tab shows the name of the formula along with what it is used for, all in a long alphabetical list that also has a search box at the top. The next tab is the Recent list, which you can manually clear in order to keep it manageable. Next is a categorical listing of all of the calculators, organized by their medical specialties (cardiology, neurology, renal, etc.). Finally is the Favorites list, which you manually add your favorite calculators to.

You basically use any of the above methods to find the screen you’re looking for, then enter in the required values in order to find out the assessment. For instance on the Cardiac Output (Echo) calculator, you would enter the LVOT Diameter, TVI, Heart Rate, and optionally the Body Surface Area; and would then be shown the Cardiac Output and Cardiac Index. I of course don’t understand a syllable of what I just wrote, but I’m not a medical professional.

Pros And Cons

I’m at a disadvantage in reviewing certain aspects of this app, since I have just admitted to not being a doctor. I have no way of knowing whether or not the calculations in this app are accurate or medically sound! I would imagine that most of the screens and formulas are mathematically-based, so as long as the equations have been programmed properly then the results should be reliable. If I were a doctor using this app I would be sure to “reality check” results before making any life-changing decisions.

In terms of the performance of the app itself, it seems to me to be a very valuable and handy tool for a doctor to have in his or her pocket (assuming accuracy). The formulas are calculated quickly and data entry is easy and intuitive. Tapping a blank field usually brings up a numbers-only keyboard, giving you nice large buttons to tap, as well as a handy “Next Field” arrow that lets you dash through the blank fields quickly.

I did discover some bugs in a couple of the features. The timer on the APGAR score screen has a START and STOP button, but if you accidentally press the START button again before first pressing STOP, then multiple timers run concurrently. The timer display becomes a hectic, erratic upward march of seemingly random numbers as each internal timer competes to update it.

The other thing I noticed is not really a bug, but is merely inconvenient. The search box on the list of formulas is case-sensitive, meaning if you’re looking for the APGAR calculator (to use the same example again), you will be able to find it by searching for “apgar”. Similarly a search for “cardiac” will turn up nothing, you have to search “Cardiac”. Not a deal-breaker, but it would certainly be more convenient if the search box were case-insensitive.


Medfixation Medical Calculator seems like a fantastic tool to have at your fingertips if you’re a medical practitioner, despite a couple of minor bugs. It seems like for $1.99 it would be a bargain to have this huge resource available at the touch of a button.

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