# ECHO On vs CTRN Prep 2024

The clearest difference is price: ECHO On at Free against CTRN Prep 2024's $19.99. On ads, in-app purchases, device support and iOS requirement there is nothing between them.

ECHO On is free to download; CTRN Prep 2024 costs $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | ECHO On | CTRN Prep 2024 |
| --- | --- | --- |
| Price | **Free** | $19.99 |
| Rating | **[4.9 (15 ratings)](https://appshunter.io/ios/app/echo-on/id1519707786/reviews)** | — |
| Number of ratings | **15** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Weekly | — |
| Monetization | Free | — |
| Size | 414 MB | 124 MB |
| Requires iOS | 15.6 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Robert Arrigo](https://appshunter.io/developer/1519707788) | [Learn-Train Inc](https://appshunter.io/developer/1695340059) |

## What reviewers say

### ECHO On

[App page](https://appshunter.io/ios/app/echo-on/id1519707786)

This medical education app helps users learn Transesophageal Echocardiography with a question bank, cognitive aid, case log, and reference library. It provides guidance on performing and interpreting a standard 28-view exam, including anatomy, function, and Doppler interrogations.

**Highlights:** Transesophageal Echocardiography education, Enlarging question bank, Rescue TEE cognitive aid, Case Log system, Perioperative Quick Reference library, Offline echo loops, Pathology, technique, and normal loop examples

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

**In-app purchases:** none


### CTRN Prep 2024

[App page](https://appshunter.io/ios/app/ctrn-prep-2024/id6477150084)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ECHO On free?

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

### Is CTRN Prep 2024 free?

CTRN Prep 2024 costs $19.99, with no in-app purchases.

### Do ECHO On or CTRN Prep 2024 have ads?

Neither ECHO On nor CTRN Prep 2024 shows ads.

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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.*