# EHRA Key Messages vs EP Calipers

The clearest difference is review sentiment: EP Calipers at 50% against EHRA Key Messages's 0%. EHRA Key Messages's advantage is price (Free vs $1.99) and rating (4.7 vs 2.3). On update cadence, ads, in-app purchases and device support there is nothing between them.

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

EHRA Key Messages holds the better App Store score, 4.7 against 2.3. Both are backed by a comparable volume of ratings — 28 and 6 respectively. Written reviews complicate that: 0% of EHRA Key Messages's written reviews are positive against 50% of EP Calipers's, so the app with the better star average is not the one people write more warmly about.

EHRA Key Messages ships an update every 6 months, EP Calipers every 3 months. The most recent releases landed on November 5, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | EHRA Key Messages | EP Calipers |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[4.7 (28 ratings)](https://appshunter.io/ios/app/ehra-key-messages/id904950207/reviews)** | [2.3 (6 ratings)](https://appshunter.io/ios/app/ep-calipers/id982313078/reviews) |
| Number of ratings | **28** | 6 |
| Positive reviews | 0.0% of reviews | **50.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 3 months** |
| Monetization | **Free** | Paid |
| Size | 159 MB | 14 MB |
| Requires iOS | **12.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 12+ |
| Developer | [ESC - European Society of Cardiology](https://appshunter.io/developer/440684535) | [EP Studios](https://appshunter.io/developer/574231798) |

## What reviewers say

### EHRA Key Messages

[App page](https://appshunter.io/ios/app/ehra-key-messages/id904950207)

Access a comprehensive library of expert guidelines and practical guides on heart rhythm management and related conditions. This app offers tools for bookmarking, note-taking, and calculations to aid in clinical decision-making.

**Highlights:** Expert heart rhythm guidelines, Practical guides on arrhythmias, Digital device management, Bookmark and notes function, Clinical scores and calculators, Content sharing

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### 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


## Frequently asked questions

### Is EHRA Key Messages free?

EHRA Key Messages is free to download, with no in-app purchases.

### Is EP Calipers free?

EP Calipers costs $1.99, with no in-app purchases.

### Which has better reviews, EHRA Key Messages or EP Calipers?

EHRA Key Messages is rated higher. EHRA Key Messages averages 4.7 out of 5 from 28 ratings, while EP Calipers averages 2.3 from 6 ratings.

### Do EHRA Key Messages or EP Calipers have ads?

Neither EHRA Key Messages nor EP Calipers shows ads.

### Which is updated more often, EHRA Key Messages or EP Calipers?

EHRA Key Messages ships an update every 6 months, and EP Calipers every 3 months. Most recently, EHRA Key Messages was updated on November 5, 2026 and EP Calipers on November 6, 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.*