# Instant ECG - Mastery of EKG — user reviews > 168 indexed App Store user reviews of Instant ECG by iAnesthesia LLC, rated 4.00/5 from 518 ratings. - Source: https://appshunter.io/ios/app/instant-ecg-mastery-of-ekg/id301270080/reviews - App overview in markdown: https://appshunter.io/ios/app/instant-ecg-mastery-of-ekg/id301270080.md - Rating breakdown: 5★ 320 · 4★ 84 · 3★ 18 · 2★ 11 · 1★ 85 ## What do users think of Instant ECG? Overall sentiment: positive **Pros** - 🚀 Helpful for learning and reviewing ECG/EKG - 👍 Concise and easy to use - 👍 Great for practice and testing - 👍 Useful for students and professionals - 👍 Excellent teaching tool **Cons** - 🔒 Some features locked behind paywall - 🐛 Crashes and bugs reported - 🔒 Limited free content - 🔋 Drains battery **Commonly reported bugs** - Rhythm strip videos not working - Exams getting stuck on certain questions - Compatibility issues with newer iOS versions **Most requested features** - More rhythm options and difficulty levels - Add treatments and clinical implications for rhythms - Landscape mode support - Ability to save and share ECG readings - Integrate with Apple Watch for live ECG monitoring ## Newest reviews (20 of 168) ### 4/5 — Like *2026-01-29, version 3.5* Excellent app for advanced and beginner EKG readers ### 4/5 — Very helpful *2025-10-16, version 3.5* I try to brush up on ECGs as much as possible and this definitely helps me whether at the house or in between calls. ### 4/5 — Great learning support *2025-07-08, version 3.5* Helps me review and prepare for ACLS. ### 5/5 — Swell review *2024-02-24, version 3.5* I love this app. It has everything I need to teach my students about EKG!! ### 5/5 — Best ekg app *2024-02-23, version 3.5* If you need a good review, use this app! ### 5/5 — Very helpful, concise and easy to learn *2024-02-10, version 3.5* As the title states, very practical and easy to learn ### 5/5 — Helpful *2024-01-26, version 3.5* Glad I got it! ### 5/5 — Works very well! *2024-01-14, version 3.5* I used this app for a mock scenario today and it was fantastic! Also serves as a great review to keep the knowledge fresh. ### 5/5 — Critical Care Paramedic *2023-12-26, version 3.5* Very help app ### 5/5 — Great app for study preparation *2023-12-13, version 3.5* Good app for getting ready to write ACLS ### 5/5 — Health *2023-12-12, version 3.5* I find it comforting to know my heart is healthy. Understand it’s not a fail proof result but still comforting. ### 5/5 — Best App for Everyday use. *2023-12-10, version 3.5* Very good app I’ve used it for years. ### 5/5 — Helpful *2023-08-15, version 3.5* Needed a refresher and this was it. ### 3/5 — Useful App; Needs More *2023-08-10, version 3.5* It would be helpful if every rhythm had a section for potential treatments such as “treating the underlying cause” for tachycardia or “Valsalva maneuver” for initial treatment for SVT prior to medication administration. I notice some rhythms have treatment explanations but many do not. ### 5/5 — Helpful *2023-06-19, version 3.5* Is a good app to a learn and refresh skills. ### 5/5 — ECG evaluation *2023-03-24, version 3.5* I use it every day to check my wife for A-Fib and it’s a great tool. ### 5/5 — 6/5 stars *2023-01-25* Outstanding app! This is trrrific-I love how when you get one wrong, it goes over it and tells you some teaching points and gives you a clinical example. I would highly recommend this application to anybody who needs to brush up, study, or learn ECG. Thanks. ### 5/5 — New to ecg and love this app *2023-01-22* I just started learning ecg and learning rhythms and this app has helped me way more then the modules my hospital assigned me to do to learn. I use this app anytime I get bored and continuously test myself. Absolutely recommend this to new ecg learners ### 5/5 — ECG *2023-01-18, version 3.5* Very helpful app ### 4/5 — Good *2022-12-29* Contrary to what some believe, it is for learning the basics of ECG, not for reading the ECG. It is good. ## Most critical reviews (10 lowest-rated) ### 1/5 — Not for me *2021-10-26, version 3.5* Wish I hadn’t bothered. ### 1/5 — Do no buy *2020-12-17, version 3.5* There is nothing more annoying than when you purchase a product and in the middle of the lesson , holds part of the lesson hostage unless you pay an additional fee. ### 1/5 — ECG APP *2020-11-12, version 3.5* Terrible! I bought it by mistake and tried three times to get reimbursed. Apple Watch 4 and above have a free ECG app that is user friendly. Results can be easily sent to your dr. Apple Watch ECG accurate and useful. Skip the above app. No stars!!! ### 1/5 — Save your money - get a proven book *2020-04-04* Nice idea but a failure in execution. The app crashes. Clearly not designed or coded by an experienced developer. Page traversal is a tedious chore; images do not enlarge and you can't read the text on them because the font is so small. Save your time and get a good book. This app is poorly written and not worth a dime. Oh, and if you try to provide freedback to the author, the app disappears!!! Pretty neat trick!! If I could, I would give zero stars. ### 1/5 — Does not function with the Apple Watch *2019-05-07, version 3.4* I bought this to sync with my Apple Watch to give ECG readout on my watch. This app only gives examples of ECG and does not sync with my watch. Very disappointed and feel that this app is a waste of money. I would not recommend this app! Information given is free elsewhere on the web. I would give 0 stars if allowed. What a waste of time and money! ### 1/5 — Do not get *2019-05-05, version 3.4* Scam doesn’t work with apple 4watch ### 1/5 — DOES NOT CHECK ECG *2019-02-27* Another app designed to mis guide you into buying,thinking it is an ECG app.Its a reference it does not check ECG.How can I get a refund ### 1/5 — Unlock them all ⛓🔗🔐🔓 *2019-01-19, version 3.4* Someone call a locksmith....You pay $4.99 for this app to gain access to each arrhythmia, then after 24 hours they start locking access to certain arrhythmias so you then have to pay an additional $4.99 to unlock the 30 that are locked.....oyy vey Make them all accessible for 1 price! ### 1/5 — Note not for self measurement *2018-03-07, version 3.4* Disappointed that it does not link to watch for measurements. What a waste of money. ### 1/5 — Sorry folks, but .... *2016-12-09, version 3.0* Having first 'bought' this App when it was free, I was disappointed to find that a new download requires purchase to remove the Ads. . MUCH more important however, the shiny new version doesn't display properly on iPad. ... Is it really that hard ??? ## Most praised reviews (10 highest-rated) ### 5/5 — Paramedic *2026-04-15, version 3.5* Excellent ### 5/5 — Very helpful *2026-02-02, version 3.5* It's the best ecg app I've ever used so far ### 5/5 — Best app for learning ECG *2025-11-30, version 3.5* Best app I’ve found for learning and testing myself for ECG and medic. ### 5/5 — Great app! *2025-08-17, version 3.5* A really nice tool for review, brushing up on rhythms, and learning. I love it! ### 5/5 — Reviewer *2025-03-06, version 3.5* Good educational app. ### 5/5 — Excellent reminder ! *2025-01-23* Thanks for this excellent reminder ### 5/5 — Very Helpful *2024-10-28, version 3.5* I'm studying for a test. This made me realize I don't know anything! It's worth the price. I love the exams and the explanations to help me study. ### 5/5 — Awesome app *2024-07-17, version 3.5* This is very helpful for preparing for the prophecy Dysrhythmia exam. And, it helps when I’m working in the Er. Plus, it’s a good preparation for the ACLS exam. ### 5/5 — EKG review *2024-06-04, version 3.5* This app provides a great review of EKG strips ### 5/5 — Practice!!! *2024-03-05* So helpful, once you have the recognition then hone the why or the other way around or both! Whatever works best for you, this app has it all. --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-02.*