arrhythmia 17+

Practice reading EKGs, lead II

Single Sail Software, LLC

    • 4.2 • 74 Ratings
    • Free
    • Offers In-App Purchases



Practice reading EKGs in lead II

Basic EKG interpretation is more accurately described as an intermediate level skill that takes time, practice and refreshing. Whether you are a doctor, nurse, EMT or tech your ability to read and pickup on basic EKG changes in real time is vital. Practice with an app that actually looks like what you see at work.

Use the app’s ‘Study Mode’ to choose one or multiple rhythms to view and compare. A brief description of each rhythm is provided, you can also pause and restart rhythms. Delete and add specific rhythms as desired. Rates, amplitudes and widths of the rhythms are dynamically set which provides for a more realistic simulation and variation within each type of rhythm.

Use the app’s ‘Game Mode’ to challenge yourself to identify rhythms presented randomly in lead II. If desired, you can also custom specify which rhythms to include in the game.

Please Read: The purpose of this app is not to teach basic EKG interpretation but rather to practice basic EKG interpretation. If you don’t know basic EKG interpretation seek out additional resources such as classes, books, online materials and mentors to learn more and further your understanding.

Note: The cardiac rhythms presented by the app are simulated approximations. There is NO guarantee to the accuracy of rhythms presented. While accuracy is not guaranteed it is a goal. Please report errors, suggestions or general feedback to:

Arrhythmia uses the standard Apple Terms of Use End User License Agreement (EULA):

What’s New

Version 2.1

Improved the Game Mode answer selection experience by changing to a vertical scroll. This update is thanks to a user like you who offered their feedback. Have a comment, suggestion or idea? Send it in!

Ratings and Reviews

4.2 out of 5
74 Ratings

74 Ratings

Redlaphoenix ,

For beginner

Simplistic way to do basic ECG reading without the confusing leads. It starts basic and you can add rhythms from a list as you go to add to your type of Ruth’s recognition. Therefore, you can add to the complexity as you get better at recognizing each rhythm.

Diorio10 ,


I like the appearance change but the horizontal scrolling to select the rhythm is clunky and slow and makes it easy to press while scrolling. At least give me an option to have a list view like before or something.
I think adding variations to some of these rhythms would help out a lot because only 1 visual example for each rhythm is easy to identify after like 5 cycles.
Also there should be more rhythms in general. I’ve had this app for almost a year and not having simple ones like accelerated/ tachycardic idioventricular or WAP or MAT seems like easy additions.
Not asking for revolutionary changes here.

Developer Response ,

Thank you for your valuable insights. I’ve made changes to the Game Mode answer selection in version 2.1 which is now available as an update. Additional updates are in the works. -Andrew, RN / Independent Developer

MGS_8 ,

Very helpful!

As an EMT student, this app has helped me tremendously when it comes to learning the different rhythms. I definitely recommend paying the 4.99 to unlock all of them. That way you can start as basic as you want and add in more for a challenge or to test your skills. It does not give an explanation, however that’s what textbooks are for🤓! Such a great way to practice. Best app all around!

App Privacy

The developer, Single Sail Software, LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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