# Opioids Dosage Conversion vs HAS

The clearest difference is price: Opioids Dosage Conversion at Free against HAS's $0.99. HAS's advantage is update cadence (every 3 weeks vs every 4 months) and iOS requirement (8.0 vs 15.6). On ads, in-app purchases and device support there is nothing between them.

Opioids Dosage Conversion is free to download; HAS costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Opioids Dosage Conversion ships an update every 4 months, HAS every 3 weeks. The most recent releases landed on October 8, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Opioids Dosage Conversion | HAS |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.3 (18 ratings)](https://appshunter.io/ios/app/opioids-dosage-conversion/id382383903/reviews)** | — |
| Number of ratings | **18** | — |
| Positive reviews | 77.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 2 MB | 9 MB |
| Requires iOS | 15.6 | **8.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Chris Marcellino MD LLC](https://appshunter.io/developer/1161719220) | [Timo Strid](https://appshunter.io/developer/936682776) |

## 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


### HAS

[App page](https://appshunter.io/ios/app/has-bled/id936682777)

**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 HAS free?

HAS costs $0.99, with no in-app purchases.

### Do Opioids Dosage Conversion or HAS have ads?

Neither Opioids Dosage Conversion nor HAS shows ads.

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

Opioids Dosage Conversion ships an update every 4 months, and HAS every 3 weeks. Most recently, Opioids Dosage Conversion was updated on October 8, 2026 and HAS on October 6, 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.*