Comparison

EP Calipers vs AngioAID 3D

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

EP Calipers

This medical app allows users to measure intervals and angles on electrocardiogram (ECG) images. It's designed for healthcare professionals to accurately analyze ECGs from photos or PDFs, aiding in calculations like heart rate and QT intervals.

Highlights
  • Measure ECG intervals
  • Measure ECG angles
  • Calculate mean heart rate
  • Determine corrected QT interval
  • Analyze ECG photos and PDFs
  • Supports Brugada syndrome beta angle measurement
Features
Read full description

EP Calipers provides electronic calipers to measure intervals on images of electrocardiograms (ECGs) or electrophysiologic recordings. Doctors, nurses and medical technicians photograph and send ECGs to each other via email and messaging using smart phones and tablets. It is difficult and inaccurate to make measurements on these images with mechanical calipers. EP Calipers can be used to make accurate ECG measurements and do calculations such as determining mean heart rate and corrected QT interval. Angles such as the beta angle in Brugada syndrome can be measured as well. Analyze ECG images you photograph or store on your device, as well as PDF files, such as ECGs generated by the AliveCor Kardia™ device.

About

AngioAID 3D

An interactive 3D simulation for learning diagnostic angiography of coronary arteries. Practice advancing catheters, manipulating views, and injecting dye in a realistic environment. Includes review modes with key anatomical and procedural information.

Highlights
  • 3D live simulation of coronary angiography
  • Interactive guidewire and catheter manipulation
  • Hemodynamic monitoring
  • C-Arm angle adjustment
  • Dye injection and cine comparison
  • Review Mode with anatomical insights
  • Tutorial video
Features
Read full description

AngioAID 3D is educational tool designed to teach key concepts of diagnostic angiography of coronary arteries. Developed at the Mount Sinai Hospital in New York City, New York State's highest volume cardiac cath lab, we aim to provide an interactive learning experience on this important topic. Within a 3D live simulation, you begin by advancing a diagnostic guidewire into the aortic root. Then, advance one of many diagnostic catheter options to either the right of left coronary ostium. Through pushing and pulling, as well as rotation of the catheter, try to achieve a truly co-axial engagement of the coronary ostium with the catheter. Meanwhile monitor the hemodynamic tab which simulated damping from over-engagement or roofing of the catheter tip. Line up the view with the target view, zoom to fill the screen with he coronaries, and rotate the C-Arm LAO/RAO and Cranial/Caudal until you're where you think you need to be. Finally, inject dye and take a cine to compare with the one we actually did in the cath lab for this set of coronaries. In addition to the diagnostic simulation, "Review Mode" allows you to play with angles and panning while always being able to see the vessels with no dye injection needed. Also a collection of key topics have been included within the review mode such as key angiographic angles depending on what you're aiming to see clearly, vessel segmentation conventions, and more coronary anatomy and angiography pearls. We highly recommend you view the tutorial video that is available when you first open the application or from the settings page to understand all of the available functions. The first launch has a normal set of coronary arteries but please stay tuned while we create more sets of coronaries such as anomalous coronaries and bypass grafts.

Screenshots

EP Calipers4 screens
AngioAID 3D4 screens

Verdict

The call

The clearest difference is price: AngioAID 3D at Free against EP Calipers's $1.99. AngioAID 3D also leads on rating (4.0 vs 2.3) and iOS requirement (15.0 vs 17.6). EP Calipers's advantage is ads (none vs shown) and update cadence (every 3 months vs every 28 months). On in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

AngioAID 3D is free to download; EP Calipers costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

AngioAID 3D holds the better App Store score, 4.0 against 2.3. That said, the two scores are not equally well evidenced: EP Calipers has 6 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

EP Calipers ships an update every 3 months, AngioAID 3D every 28 months. The most recent releases landed on November 1, 2026 and October 11, 2026 respectively.

Scorecard7 real differences · 3 level
EP Calipers versus AngioAID 3D: the parameters behind the verdict, then further details
ParameterEP CalipersAngioAID 3D
Price$1.99Free — better
Rating2.3 (6 ratings)4.0 (1 ratings) — better
Positive reviews50.0% of reviews—
Number of ratings6 — better1
Update frequencyEvery 3 months — betterEvery 28 months
AdsNo — betterYes
In-app purchasesNoNo
MonetizationPaidAd-supported — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.615.0 — better
Further details — not scored
Size14 MB92 MB
Age rating12+17+
DeveloperEP StudiosCardiology Apps LLC

Customer experience

EP Calipers

All ratings6 ratings
Positive33.3%
Neutral0.0%
Negative66.7%
Written reviews8 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

AngioAID 3D

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

EP Calipers

No in-app purchases

None

AngioAID 3D

No in-app purchases

Questions

Is EP Calipers free?
EP Calipers costs $1.99, with no in-app purchases.
Is AngioAID 3D free?
AngioAID 3D is free to download, with no in-app purchases.
Which has better reviews, EP Calipers or AngioAID 3D?
AngioAID 3D is rated higher. EP Calipers averages 2.3 out of 5 from 6 ratings, while AngioAID 3D averages 4.0 from 1 ratings.
Do EP Calipers or AngioAID 3D have ads?
AngioAID 3D shows ads; EP Calipers does not.
Which is updated more often, EP Calipers or AngioAID 3D?
EP Calipers ships an update every 3 months, and AngioAID 3D every 28 months. Most recently, EP Calipers was updated on November 1, 2026 and AngioAID 3D on October 11, 2026.

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