EP Studios provides apps on multiple platforms (iOS, Android, Windows, Mac) to help with the diagnosis and treatment of cardiac arrhythmias. These apps are designed to help EP doctors, cardiologists, ER doctors, internists, NPs, PAs, nurses, technicians and students in their daily work.
News
2025-10-03. We are still rolling out updates to the Apple versions of the apps to support iOS 26 and the new Liquid Glass UI. It turns out there are some incompatibilities between some old UIKit functions and Liquid Glass, but we’re working through them. So far, we’ve submitted updates to EP Mobile and EP Calipers for review to the Apple App Store. Once these updates are complete and all the apps have their shiny new translucent buttons, we’ll be returning to work on incorporating new algorithms into EP Mobile.
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

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

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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

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.
Blog
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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.