EP Studios provides apps on multiple platforms (iOS, Android, Windows, Mac) to help with the diagnosis and treatment of cardiac arrhythmias. They are designed to help EP doctors, cardiologists, ER doctors, internists, NPs, PAs, nurses, technicians and students in their daily work.


EP Calipers 3 for Windows is now available on the Microsoft Store. This is a completely new rewrite of the app. See this blog post about the new version. Go to the EP Calipers page for more information.

EP Calipers 3 on Windows 11

EP Mobile

Go to the EP Mobile page

EP Mobile is a heart rhythm reference app that includes everything from risk scores to ICD implant guidelines. It’s available for iOS and Android devices.

EP Calipers

Go to the EP Calipers page

EP Calipers provides electronic calipers to make measurements and calculations on digital electrocardiograms. It’s available for iOS, Android, macOS, and Windows. 

EP Coding

Go to the EP Coding page

EP Coding provides procedural and diagnostic codes needed for recording and billing rhythm management procedures in the United States health care system. Available for iOS and Android devices.


Go to the EP QTc page

EP QTc is the ultimate QTc calculator. It includes over 30 formulas of historic interest and practical use for calculating the QTc, including graphical and statistical analysis of the results of these calculations. Available for iOS devices and Mac.

EP Diagram

EP Diagram on an iPad
Go to the EP Diagram page

EP Diagram is an iPad and Mac app for drawing electrocardiographic ladder diagrams for didactic purposes. These diagrams are saved as files and can be scrolled and zoomed. Once calibrated, interval and conduction times are automatically generated. Publication quality figures can be easily produced.


Go to the blog

Over the years I have written on various subjects, not all of them medical. In fact the topics are pretty far-ranging. Take a look.