# EF vs EchoGuide by ASE

The clearest difference is update cadence: EchoGuide by ASE at monthly against EF's every 48 months. EF's advantage is iOS requirement (12.0 vs 14.2). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

EF ships an update every 48 months, EchoGuide by ASE monthly. The most recent releases landed on October 1, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | EF | EchoGuide by ASE |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (41 ratings)](https://appshunter.io/ios/app/echoguide-by-ase/id1582601048/reviews)** |
| Number of ratings | — | **41** |
| Positive reviews | — | 75.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 48 months | **Monthly** |
| Monetization | — | Free |
| Size | 22 MB | 96 MB |
| Requires iOS | **12.0** | 14.2 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 17+ | 12+ |
| Developer | [Keiji Matsui](https://appshunter.io/developer/365287272) | [American Society of Echocardiography](https://appshunter.io/developer/421031128) |

## What reviewers say

### EF

[App page](https://appshunter.io/ios/app/ef-ejection-fraction/id1342185936)

**Features:** macOS Compatibility

**In-app purchases:** none


### EchoGuide by ASE

[App page](https://appshunter.io/ios/app/echoguide-by-ase/id1582601048)

This medical app offers over 50 calculators, algorithms, and charts based on key guidelines for cardiac care professionals. It allows users to favorite interactive tools for quick access to a wide range of echocardiography measurements and assessments.

**Highlights:** Over 50 calculators, algorithms, and charts, Based on ASE guidelines, Favorite interactive tools, Cardiac care reference, Echocardiography measurements

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

**In-app purchases:** none


## Frequently asked questions

### Is EF free?

EF is free to download, with no in-app purchases.

### Is EchoGuide by ASE free?

EchoGuide by ASE is free to download, with no in-app purchases.

### Do EF or EchoGuide by ASE have ads?

Neither EF nor EchoGuide by ASE shows ads.

### Which is updated more often, EF or EchoGuide by ASE?

EF ships an update every 48 months, and EchoGuide by ASE monthly. Most recently, EF was updated on October 1, 2026 and EchoGuide by ASE on October 14, 2026.

---

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