Comparison

Opioid Calculator vs Opioid Conversion Calculator

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Opioid Calculator

This medical tool calculates the total oral Morphine Equivalent Daily Dose (oMEDD) for patients using multiple opioids. It aims to simplify complex calculations for clinical practice, education, and research.

Highlights
  • Calculate oral Morphine Equivalent Daily Dose (oMEDD)
  • Simplify calculations for combined opioids
  • Facilitate clinical practice
  • Support medical education
  • Aid research
Features
Read full description

This Opioid Calculator Application is a tool for the calculation of total oral Morphine Equivalent Daily Dose (oMEDD). A particular design feature of the app is that it simplifies the calculation of oMEDD in cases where combinations of opioids are used. It is designed to provide easy accessibility and consistency to facilitate research, improve education and fill a void in the availability of reference conversion data in clinical practice. This opioid calculator is produced by the Faculty of Pain Medicine of the Australian and New Zealand College of Anaesthetists (FPM ANZCA) which is the peak body responsible for the education, training, continuing professional development and maintenance of standards of clinical practice for specialist pain medicine physicians in Australia and New Zealand.

About

Opioid Conversion Calculator

This medical app simplifies complex opioid conversion tasks for healthcare professionals. It offers extensive drug coverage, a visual safety indicator for dosages, and breakthrough dosing calculations. Available in multiple languages, it ensures accurate and safe pain management.

Highlights
  • Extensive drug coverage
  • Visual safety indicator
  • Breakthrough dosing calculations
  • Formulation conversions
  • Up-to-date pharmaceutical formulary
  • Multilingual support
Features
Read full description

Opioid Conversion Calculator is built for health professionals who need a clear, efficient way to compare opioid doses and review the clinical context behind a conversion. Built by a pharmacist. CALCULATE AND COMPARE - Calculate total oral morphine equivalent (OME) across multiple opioids and routes: oral, parenteral, rectal, sublingual and transdermal. - See every converted dose at once, after applying a chosen Target OME percentage for incomplete cross-tolerance. - View conservative, rounded-down target and breakthrough dose suggestions. - See where a daily dose sits: the header warms from orange at 50 mg/day (CDC 2022) to red at 120 mg/day (Opioids Aware). Adjust the thresholds or turn the guide off. - Methadone uses its own dose-dependent model, and its results are clearly marked as not a starting dose. - Convert the same opioid between routes, such as oral and parenteral morphine, with the method and sources shown. EVERY RESULT, IN CONTEXT - Each result opens with the converted dose, then products, clinical information, breakthrough dosing and switching timing. - Read practice points alongside formulation-specific pharmacology, with links to the supporting sources. - Check when to start the new opioid when switching between patches, modified-release opioids and CSCI. Switching timing is also in the menu, free for everyone. - View official products and strengths for Australia, the United States, Germany, France and Spain, chosen independently from the app language. TAILOR THE WORKFLOW - Edit conversion factors and choose which opioids appear, with Pro. - Export and import settings when moving between devices, with Pro. - Works offline, including on first launch. - Use the app in English, French, German, Italian, Portuguese (Brazil) or Spanish. PRO ACCESS The calculator stays free: the combined OME and every converted dose need no account or purchase. Pro adds breakthrough dosing, switching timing, products and clinical information to every result, plus custom conversion factors, opioid visibility and settings transfer. Your first detailed results are free to try. Available plans, prices and any introductory offer are shown using the information supplied by the App Store before purchase. Purchases can be restored in the app. CLINICAL USE Equianalgesic conversions are estimates and do not replace clinical judgement. Consider incomplete cross-tolerance, patient factors, formulation, route, local guidance and monitoring when interpreting a result. Review the references and terms of use before using the calculator in clinical practice. Privacy policy: https://opioidconversioncalculator.com/privacy Terms of use: https://opioidconversioncalculator.com/terms

Screenshots

Opioid Calculator4 screens
Opioid Conversion Calculator4 screens

Verdict

The call

The clearest difference is price: Opioid Conversion Calculator at Free against Opioid Calculator's $0.99. Opioid Conversion Calculator also leads on update cadence (every 6 weeks vs every 6 months) and iOS requirement (13.0 vs 16.6). Opioid Calculator's advantage is review sentiment (81% vs 38%) and in-app purchases (none vs 3). On rating, ratings volume, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Opioid Conversion Calculator is free to download; Opioid Calculator costs $0.99 up front. Opioid Conversion Calculator sells 3 in-app purchases, starting at $3.99 per month. Opioid Calculator asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 3.7 for Opioid Calculator against 3.7 for Opioid Conversion Calculator. Both are backed by a comparable volume of ratings — 9 and 17 respectively. Written reviews are what separate them: 81% of Opioid Calculator's written reviews are positive against 38% of Opioid Conversion Calculator's.

UpkeepUpdate frequency

Opioid Calculator ships an update every 6 months, Opioid Conversion Calculator every 6 weeks. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

Scorecard6 real differences · 4 level
Opioid Calculator versus Opioid Conversion Calculator: the parameters behind the verdict, then further details
ParameterOpioid CalculatorOpioid Conversion Calculator
Price$0.99Free — better
Rating3.7 (9 ratings)3.7 (17 ratings) — better
Positive reviews81.3% of reviews — better37.5% of reviews
Number of ratings917 — better
Update frequencyEvery 6 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.613.0 — better
Further details — not scored
Size3 MB76 MB
Age rating17+17+
DeveloperANZCAAyrial Beall

Customer experience

Opioid Calculator

All ratings9 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews16 reviews
Positive81.3%
Neutral0.0%
Negative18.8%

Opioid Conversion Calculator

All ratings17 ratings
Positive64.7%
Neutral5.9%
Negative29.4%
Written reviews8 reviews
Positive37.5%
Neutral25.0%
Negative37.5%

In-app purchases

None

Opioid Calculator

No in-app purchases

3 purchases

Opioid Conversion Calculator

Subscriptions2
  • Monthly Pro Access$3.991 Month
  • Pro Access$19.991 Year
One-time1
  • Lifetime Pro Access$79.99

Questions

Is Opioid Calculator free?
Opioid Calculator costs $0.99, with no in-app purchases.
Is Opioid Conversion Calculator free?
Opioid Conversion Calculator is free to download, with in-app purchases available.
Which has better reviews, Opioid Calculator or Opioid Conversion Calculator?
Opioid Conversion Calculator is rated higher. Opioid Calculator averages 3.7 out of 5 from 9 ratings, while Opioid Conversion Calculator averages 3.7 from 17 ratings.
Do Opioid Calculator or Opioid Conversion Calculator have ads?
Neither Opioid Calculator nor Opioid Conversion Calculator shows ads.
Which is updated more often, Opioid Calculator or Opioid Conversion Calculator?
Opioid Calculator ships an update every 6 months, and Opioid Conversion Calculator every 6 weeks. Most recently, Opioid Calculator was updated on November 2, 2026 and Opioid Conversion Calculator on November 3, 2026.

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