# KCENTRA Quick Guide vs ECHO On

The clearest difference is rating: ECHO On at 4.9 against KCENTRA Quick Guide's 2.0. ECHO On also leads on update cadence (weekly vs every 7 months) and ratings volume (14 vs 4). KCENTRA Quick Guide's advantage is iOS requirement (11.0 vs 15.6). On price, ads, in-app purchases and monetization model there is nothing between them.

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

ECHO On holds the better App Store score, 4.9 against 2.0. Both are backed by a comparable volume of ratings — 4 and 14 respectively.

KCENTRA Quick Guide ships an update every 7 months, ECHO On weekly. The most recent releases landed on September 25, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | KCENTRA Quick Guide | ECHO On |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (4 ratings)](https://appshunter.io/ios/app/kcentra-quick-guide/id979599860/reviews) | **[4.9 (14 ratings)](https://appshunter.io/ios/app/echo-on/id1519707786/reviews)** |
| Number of ratings | 4 | **14** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Weekly** |
| Monetization | Free | Free |
| Size | 29 MB | 414 MB |
| Requires iOS | **11.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 12+ |
| Developer | [CSL Behring](https://appshunter.io/developer/423383402) | [Robert Arrigo](https://appshunter.io/developer/1519707788) |

## What reviewers say

### KCENTRA Quick Guide

[App page](https://appshunter.io/ios/app/kcentra-quick-guide/id979599860)

This medical app provides quick access to essential tools and information for healthcare professionals regarding a specific blood coagulation factor replacement product. It includes a dosing calculator, administration guidelines, and patient monitoring information, all accessible offline.

**Highlights:** Offline access to information, Dosing calculator, Reconstitution video and guide, Administration guidelines, Patient monitoring information

**In-app purchases:** none


### 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


## Frequently asked questions

### Is KCENTRA Quick Guide free?

KCENTRA Quick Guide is free to download, with no in-app purchases.

### Is ECHO On free?

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

### Which has better reviews, KCENTRA Quick Guide or ECHO On?

ECHO On is rated higher. KCENTRA Quick Guide averages 2.0 out of 5 from 4 ratings, while ECHO On averages 4.9 from 14 ratings.

### Do KCENTRA Quick Guide or ECHO On have ads?

Neither KCENTRA Quick Guide nor ECHO On shows ads.

### Which is updated more often, KCENTRA Quick Guide or ECHO On?

KCENTRA Quick Guide ships an update every 7 months, and ECHO On weekly. Most recently, KCENTRA Quick Guide was updated on September 25, 2026 and ECHO On on October 13, 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.*