# EP Calipers vs EPLog

The clearest difference is device support: EP Calipers at 3 against EPLog's 1. EP Calipers also leads on iOS requirement (14.0 vs 18.1). EPLog's advantage is price ($0.99 vs $1.99). On update cadence, ads and in-app purchases there is nothing between them.

EP Calipers costs $1.99 and EPLog $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

EP Calipers ships an update every 3 months, EPLog every 4 months. The most recent releases landed on September 13, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | EP Calipers | EPLog |
| --- | --- | --- |
| Price | $1.99 | **$0.99** |
| Rating | **[2.3 (6 ratings)](https://appshunter.io/ios/app/ep-calipers/id982313078/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 4 months |
| Monetization | Paid | — |
| Size | 9 MB | 3 MB |
| Requires iOS | **14.0** | 18.1 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [EP Studios](https://appshunter.io/developer/574231798) | [Matthew Segar](https://appshunter.io/developer/1886591457) |

## 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


### EPLog

[App page](https://appshunter.io/ios/app/eplog/id6760868000)

**In-app purchases:** none


## Frequently asked questions

### Is EP Calipers free?

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

### Is EPLog free?

EPLog costs $0.99, with no in-app purchases.

### Do EP Calipers or EPLog have ads?

Neither EP Calipers nor EPLog shows ads.

### Which is updated more often, EP Calipers or EPLog?

EP Calipers ships an update every 3 months, and EPLog every 4 months. Most recently, EP Calipers was updated on September 13, 2026 and EPLog on September 15, 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.*