# UmbiCalc vs Bunnell HFJV

The clearest difference is ads: UmbiCalc at none against Bunnell HFJV's shown. UmbiCalc also leads on monetization model (free vs ad-supported) and iOS requirement (12.0 vs 15.0). Bunnell HFJV's advantage is update cadence (every 4 weeks vs every 12 months). On price, rating, ratings volume and in-app purchases there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for UmbiCalc against 5.0 for Bunnell HFJV. Both are backed by a comparable volume of ratings — 4 and 2 respectively.

UmbiCalc ships an update every 12 months, Bunnell HFJV every 4 weeks. The most recent releases landed on October 3, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | UmbiCalc | Bunnell HFJV |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (4 ratings)](https://appshunter.io/ios/app/umbicalc/id1504095676/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/bunnell-hfjv/id6751279424/reviews) |
| Number of ratings | **4** | 2 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 12 months | **Every 4 weeks** |
| Monetization | **Free** | Ad-supported |
| Size | 67 MB | 67 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Yale](https://appshunter.io/developer/462262997) | [Bunnell Inc](https://appshunter.io/developer/1834416363) |

## What reviewers say

### UmbiCalc

[App page](https://appshunter.io/ios/app/umbicalc/id1504095676)

This medical app estimates umbilical catheter insertion lengths for neonates based on birth weight. It utilizes an algorithm derived from statistical modeling and is intended for educational use by healthcare professionals. Always consult a medical provider for health advice.

**Highlights:** Umbilical arterial catheter estimation, Umbilical venous catheter estimation, Birth weight-based calculations, Based on published algorithm, For educational purposes

**In-app purchases:** none


### Bunnell HFJV

[App page](https://appshunter.io/ios/app/bunnell-hfjv/id6751279424)

This app provides respiratory therapists and medical professionals with quick access to essential resources for operating a specific type of ventilator. It includes setup guides, troubleshooting tips, user manuals, and direct contact information for support.

**Highlights:** 24/7 Bunnell Hotline access, Instructional videos, User manuals, Quick reference guides, Free CRCE Credits, Website and contact page access, Content bookmarking

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is UmbiCalc free?

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

### Is Bunnell HFJV free?

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

### Which has better reviews, UmbiCalc or Bunnell HFJV?

UmbiCalc and Bunnell HFJV are both rated 5.0 out of 5 on the App Store, from 4 and 2 ratings respectively.

### Do UmbiCalc or Bunnell HFJV have ads?

Bunnell HFJV shows ads; UmbiCalc does not.

### Which is updated more often, UmbiCalc or Bunnell HFJV?

UmbiCalc ships an update every 12 months, and Bunnell HFJV every 4 weeks. Most recently, UmbiCalc was updated on October 3, 2026 and Bunnell HFJV on October 21, 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.*