# Opioids Dosage Conversion vs CARMA For Life

The clearest difference is price: Opioids Dosage Conversion at Free against CARMA For Life's $5.99. CARMA For Life's advantage is update cadence (monthly vs every 4 months) and iOS requirement (8.0 vs 15.6). On rating, review sentiment, ratings volume and ads there is nothing between them.

Opioids Dosage Conversion is free to download; CARMA For Life costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.3 for Opioids Dosage Conversion against 4.4 for CARMA For Life. Both are backed by a comparable volume of ratings — 19 and 15 respectively. Written reviews are what separate them: 78% of Opioids Dosage Conversion's written reviews are positive against 82% of CARMA For Life's.

Opioids Dosage Conversion ships an update every 4 months, CARMA For Life monthly. Both last shipped on November 1, 2026.

## The numbers

| Metric | Opioids Dosage Conversion | CARMA For Life |
| --- | --- | --- |
| Price | **Free** | $5.99 |
| Rating | [4.3 (19 ratings)](https://appshunter.io/ios/app/opioids-dosage-conversion/id382383903/reviews) | **[4.4 (15 ratings)](https://appshunter.io/ios/app/carma-for-life/id970043074/reviews)** |
| Number of ratings | **19** | 15 |
| Positive reviews | 77.8% of reviews | **81.8% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Monthly** |
| Monetization | **Free** | Paid |
| Size | 2 MB | 4 MB |
| Requires iOS | 15.6 | **8.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 12+ |
| Developer | [Chris Marcellino MD LLC](https://appshunter.io/developer/1161719220) | [ACLS SOLUTIONS, LLC](https://appshunter.io/developer/970043073) |

## What reviewers say

### Opioids Dosage Conversion

[App page](https://appshunter.io/ios/app/opioids-dosage-conversion/id382383903)

This app is a calculator for trained medical professionals to convert opioid analgesic dosages. It supports various common opioids and administration routes, offering features like breakthrough dosing and cross-tolerance calculations.

**Highlights:** Opioid dosage conversion, Multiple drug support, Multiple route support, Breakthrough dosing calculator, Incomplete cross tolerance option, Instructional details

**Features:** macOS Compatibility

**In-app purchases:** none


### CARMA For Life

[App page](https://appshunter.io/ios/app/carma-for-life/id970043074)

This medical application assists healthcare professionals in managing cardiac arrest resuscitation events. It provides real-time guidance through ACLS protocols, including timers, diagnostic tips, and treatment recommendations, aiming to improve patient survival rates.

**Highlights:** ACLS protocol guidance, Countdown timers, Ventricular Tachycardia/Fibrillation reference, Diagnostic Tips (H's and T's), Medication and treatment recommendations, Audible CPR metronome, Session logging and emailing

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

**In-app purchases:** none


## Frequently asked questions

### Is Opioids Dosage Conversion free?

Opioids Dosage Conversion is free to download, with no in-app purchases.

### Is CARMA For Life free?

CARMA For Life costs $5.99, with no in-app purchases.

### Which has better reviews, Opioids Dosage Conversion or CARMA For Life?

CARMA For Life is rated higher. Opioids Dosage Conversion averages 4.3 out of 5 from 19 ratings, while CARMA For Life averages 4.4 from 15 ratings.

### Do Opioids Dosage Conversion or CARMA For Life have ads?

Neither Opioids Dosage Conversion nor CARMA For Life shows ads.

### Which is updated more often, Opioids Dosage Conversion or CARMA For Life?

Opioids Dosage Conversion ships an update every 4 months, and CARMA For Life monthly. Most recently, Opioids Dosage Conversion was updated on November 1, 2026 and CARMA For Life on November 1, 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.*