Last year we compared our four favorite free-to-almost free medical calculators for the iPhone: Epocrates’ MedMath, MedCalc, QxMD Calculate, and Skyscape’s Archimedes.

Not to be confused with MedMath from Epocrates, the MediMath Medical Calculator App comes from Regular Rate and Rhythm Software, founded in 2008 by Tulane University ophthalmology resident Evan Schoenberg, MD.

Dr. Schoenberg, whom we interviewed back in June 2011, is a prolific software developer, who has also developed applications that include Rowmote (remote control), Med Mnemonics, ICD9 Consult, and Perfect OB Wheel. Of note, Dr. Schoenberg is also the lead developer of Adium, a popular free open-source instant-messaging client for Mac OS X.

How does the MediMath App compare to our previously reviewed medical calculators for the iPhone and iPod Touch?

The terms of use must be agreed to before using the MediMath App, but –to our applause—note that the original literature reference for each medical calculator is available at the top-right.

The home screen features the app’s calculators sorted alphabetically, while the bottom index bar features buttons for all calculators, recently used calculators, categories, and favorites.

The app features a search bar that allows users to dynamically search among its medical calculators by title.

As we did with our earlier medical calculator app comparison, we explore the Cockcroft-Gault calculator for calculating creatinine clearance.

The MediMath App user interface makes it easy to input and select variables, as well as to toggle between units, with a minimum of screen taps.

The “i” button in the top-right displays the actual formula used in the medical calculator, as well as the original literature reference for the calculator.

MediMath also stores recently used medical calculators for easy recall by users.

Also of note, the info button for some medical calculators, where appropriate (as in this example of fractional excretion of sodium), offers further information pertaining to the interpretation of the result.

Next, the MediMath App sorts its calculators by category or specialty, as shown here for gastroenterology. This is potentially useful for specialists or pediatricians, but not quite as useful as assembling one’s own favorites (below).

Finally, users can add favorites for quick recall of their most frequently used medical calculators.


  • The MediMath App costs $4.99 at the iTunes store.


  • Here we add a column for the MediMath Medical Calculator App (in red) to our summary table from last year’s calculator comparison:
Medical Calculator MedMath MedCalc Archimedes QxMD Calculate MediMath
Developer Epocrates Drs. Pfiffner and Tschopp SkyScape QxMD Dr. Schoenberg
# of clinical calculators ~45 ~150 ~150 (360 has over 200) ~150 133
Searchable No Yes (by title AND keyword) Yes (only by title) Yes (only by title) Yes (only by title)
Ability to designate favorites Yes Yes No (though a history is compiled) Yes Yes
Calculator Info Yes Yes Limited (no reference) Limited (reference only) Yes
Price Free $0.99 (Pro version costs $7.99) Free (360 version costs >$20 for 1 year) Free $4.99


  • MediMath boasts 133 medical calculators, comparable to the number available in MedCalc, MedMath, and Archimedes
  • Favorites option (like MedCalc, QxMD, and MedMath) that enables users to save the calculators used most often for quick recall
  • Information and interpretation of calculators (like MedCalc and MedMath)
  • Slick user interface that minimizes extra screen taps to get results


  • Cost of $4.99, when perfectly adequate medical calculators such as QxMD Calculate and MedCalc are free or $0.99, respectively


  • The MediMath Medical Calculator App boasts an impressive user interface, a wealth of useful medical calculators, and information (including the formula and literature reference) for each calculator.
  • It is definitely comparable to our top-rated medical calculators for the iPhone/iPod Touch, but does cost $4.99, whereas similar options can run for less than a dollar

iTunes Link