# EP Calipers vs AngioAID 3D

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.

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.

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.

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.

## The numbers

| Metric | EP Calipers | AngioAID 3D |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [2.3 (6 ratings)](https://appshunter.io/ios/app/ep-calipers/id982313078/reviews) | **[4.0 (1 ratings)](https://appshunter.io/ios/app/angioaid-3d/id1639925845/reviews)** |
| Number of ratings | **6** | 1 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 3 months** | Every 28 months |
| Monetization | Paid | **Ad-supported** |
| Size | 14 MB | 92 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 12+ | 17+ |
| Developer | [EP Studios](https://appshunter.io/developer/574231798) | [Cardiology Apps LLC](https://appshunter.io/developer/1639925847) |

## What reviewers say

### EP Calipers

[App page](https://appshunter.io/ios/app/ep-calipers/id982313078)

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:** Vision Pro support

**In-app purchases:** none


### AngioAID 3D

[App page](https://appshunter.io/ios/app/angioaid-3d/id1639925845)

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:** macOS Compatibility

**In-app purchases:** none


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*