This app was mentioned in 3 comments, with an average of 1.33 upvotes
Android app called 12-Lead ECG Challenge
Has a big collection of practice 12-Leads, some of which are complicated, but many of them are just simple STEMI etc, great for practicing your methodical analysis as well as your quick look first impressions.
When I was doing my cardiology paper whenever I was bored / stuck in traffic / on the bus etc etc I would just flick through hundreds of these 12-Leads, helped a lot.
New to this subreddit. So sorry for the delay. I love 12-lead ecg app Android
I like this one for EKG's
https://play.google.com/store/apps/details?id=com.limmercreative.srtengine.twelveleadchallenge