DocNomo is a convenient graphical tool to enhance the bedside interpretation of a diagnostic test result. From the diagnostic sensitivity and specificity of the test and the probability of the patient having the target disorder before running the test (Pre-Test Probability), DocNomo calculates for you the probability of the patient having the target disorder after running the test (i.e. Post-Test Probability). Using the convenience of tactile sliders, each of these parameters may be changed to visually assess their impact on the Post-Test Probability.
DocNomo is the digital adaptation of the Two-Step Fagan Nomogram which is the updated version (2013) of the original Fagan's nomogram developed by Dr. Terrence J. Fagan (1975).

What's New

Version 2.0.1

This new version of DocNomo v.2.0.1 offers new features which will improve your routine evidence-based diagnosis:
-You can now save and share the values of test accuracy on your iCloud account. No need to re-enter your test values ever again.
-In place of the nomogram, you may prefer using the new featured Probability Modifying Axis (PMA). It visually indicates you how much a given test result affects your confidence on the presence of a condition of interest in your patient.
-For tests used regularly, you can use the new featured Probability Modifying Plot (PMP). This graphic helps you calculate rapidly your post-test probability from the pre-test probability and the nature of the nature of the test result.
With all these new features, you have no more reasons to not had some evidence to your diagnosis. Enjoy!
-iPhone X support.
-The DocNomo team.

Ratings and Reviews


New update is too tedious

This can be a great app, but there needs to be an option to switch back to the generic Nomogram without having to put in sensitivity/specificity and all the other stats. As it stands now, it's perfectly suited for researchers and all but useless for students.


Useful, well made app

This app should be on the front screen of every physician's phone. It is quick, unobtrusive, and an important tool for appropriate EBM practice. Not only that, it is provided free.

Thank you to the developer for your time and effort.


Charles Caraguel
23.1 MB
Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© Charles GB Caraguel


  • Family Sharing

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

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