# Opioids Dosage Conversion vs OHSU MViPS

The clearest difference is rating: OHSU MViPS at 5.0 against Opioids Dosage Conversion's 4.3. OHSU MViPS also leads on iOS requirement (13.0 vs 15.6). Opioids Dosage Conversion's advantage is ratings volume (18 vs 3). On price, update cadence, ads 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.

OHSU MViPS holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Opioids Dosage Conversion has 18 ratings behind it against 3, so its average is the more settled of the two.

Opioids Dosage Conversion ships an update every 4 months, OHSU MViPS every 5 months. The most recent releases landed on October 16, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Opioids Dosage Conversion | OHSU MViPS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (18 ratings)](https://appshunter.io/ios/app/opioids-dosage-conversion/id382383903/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/ohsu-mvips/id1666357496/reviews)** |
| Number of ratings | **18** | 3 |
| Positive reviews | 77.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 5 months |
| Monetization | Free | Free |
| Size | 2 MB | 7 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Chris Marcellino MD LLC](https://appshunter.io/developer/1161719220) | [Oregon Health & Science University Apps](https://appshunter.io/developer/1234363007) |

## 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


### OHSU MViPS

[App page](https://appshunter.io/ios/app/ohsu-mvips/id1666357496)

This app provides access to pediatric surgery protocols developed by Oregon Health & Science University. It links to published data to support evidence-based surgical practices.

**Highlights:** Pediatric surgery protocols, Links to published data, Minimizing Variance in Pediatric Surgery program information, Evidence-based practice support

**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 OHSU MViPS free?

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

### Which has better reviews, Opioids Dosage Conversion or OHSU MViPS?

OHSU MViPS is rated higher. Opioids Dosage Conversion averages 4.3 out of 5 from 18 ratings, while OHSU MViPS averages 5.0 from 3 ratings.

### Do Opioids Dosage Conversion or OHSU MViPS have ads?

Neither Opioids Dosage Conversion nor OHSU MViPS shows ads.

### Which is updated more often, Opioids Dosage Conversion or OHSU MViPS?

Opioids Dosage Conversion ships an update every 4 months, and OHSU MViPS every 5 months. Most recently, Opioids Dosage Conversion was updated on October 16, 2026 and OHSU MViPS on September 22, 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.*