# CVR Calc vs ECMO Bedside Guide

The clearest difference is review sentiment: ECMO Bedside Guide at 100% against CVR Calc's 33%. ECMO Bedside Guide also leads on rating (5.0 vs 3.3) and update cadence (every 4 months vs every 8 months). CVR Calc's advantage is ratings volume (27 vs 7). 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.

ECMO Bedside Guide holds the better App Store score, 5.0 against 3.3. Both are backed by a comparable volume of ratings — 27 and 7 respectively. Written reviews point the same way: 33% of CVR Calc's written reviews are positive against 100% of ECMO Bedside Guide's.

CVR Calc ships an update every 8 months, ECMO Bedside Guide every 4 months. The most recent releases landed on October 24, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | CVR Calc | ECMO Bedside Guide |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.3 (27 ratings)](https://appshunter.io/ios/app/cvr-calc/id1423744026/reviews) | **[5.0 (7 ratings)](https://appshunter.io/ios/app/ecmo-bedside-guide/id6738068755/reviews)** |
| Number of ratings | **27** | 7 |
| Positive reviews | 33.3% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 4 months** |
| Monetization | Free | Free |
| Size | 4 MB | 58 MB |
| Requires iOS | 18.5 | **13.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Global Vascular Access, LLC](https://appshunter.io/developer/1423744025) | [Extracorporeal Life Support Organization](https://appshunter.io/developer/1504162103) |

## What reviewers say

### CVR Calc

[App page](https://appshunter.io/ios/app/cvr-calc/id1423744026)

This medical tool assists healthcare professionals in vascular access and infusion therapy by calculating catheter to vessel ratios. It helps clinicians quickly assess the area consumed within the intravascular space by catheters, supporting both venous and arterial devices.

**Highlights:** Catheter to vessel ratio calculation, Supports venous and arterial devices, Peripheral and central venous access device calculations, Area-based calculations for patient assessment, Uses ultrasound measurements for vessel size, Based on academic research and awards

**Features:** Vision Pro support

**In-app purchases:** none


### ECMO Bedside Guide

[App page](https://appshunter.io/ios/app/ecmo-bedside-guide/id6738068755)

This app provides healthcare professionals with essential, offline access to vital information for managing patients on Extracorporeal Membrane Oxygenation (ECMO). It includes calculators, checklists, medication dosing, equipment details, and emergency guidance.

**Highlights:** Rapid calculations for BSA, flows, and oxygenation, Comprehensive checklists for ECMO management, Medication dosing information, Equipment specifications and usage, Candidacy assessments for adult and pediatric patients, Emergency guidance with 'Panic!' button, Offline access to all features

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CVR Calc free?

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

### Is ECMO Bedside Guide free?

ECMO Bedside Guide is free to download, with no in-app purchases.

### Which has better reviews, CVR Calc or ECMO Bedside Guide?

ECMO Bedside Guide is rated higher. CVR Calc averages 3.3 out of 5 from 27 ratings, while ECMO Bedside Guide averages 5.0 from 7 ratings.

### Do CVR Calc or ECMO Bedside Guide have ads?

Neither CVR Calc nor ECMO Bedside Guide shows ads.

### Which is updated more often, CVR Calc or ECMO Bedside Guide?

CVR Calc ships an update every 8 months, and ECMO Bedside Guide every 4 months. Most recently, CVR Calc was updated on October 24, 2026 and ECMO Bedside Guide on October 10, 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.*