By ANZCA
Report updated Jun 10, 2026
Opioid Calculator
For pain medicine physicians and clinical staff requiring standardized opioid conversion tools, alongside general users seeking a multi-purpose calculator.
Opioid Calculator is an established medical app that is free with in-app purchases. With a 4.3/5 rating from 367.1K reviews, it shows polarized user reception. Users particularly appreciate the core calculation functionality provides a reliable and fast experience for daily professional use, though cursor jumping and input duplication during long addition sequences disrupt the calculation workflow remains a common concern.
What is Opioid Calculator?
Opioid Calculator is a medical utility app for Android and iOS that provides opioid dosage conversion and general mathematical tools for clinical staff.
Clinicians hire the app for rapid, standardized dosage math that reduces the risk of manual calculation errors during patient consultations.
Current Momentum
v4.0 · 6mo ago
Maintenance- Shipped Opioid Safety Resources tab.
- Updated FPM clinical position statements.
- Added dosage threshold pop-up alerts.
Active Nemesis
Davis's Drug Guide - Nurses
By Unbound Medicine
Other Rivals
Rating Pulse 🇺🇸
Recent User MoodAI-powered deep analysis surfacing high-signal insights. Still in beta, accuracy improves daily. For informational purposes only.
What makes this app unique?
What Does It Look Like?
How Is The App's Momentum Right Now?
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What Are The Key Features?
Calculates total oral Morphine Equivalent Daily Dose for single or combined opioid regimens.
Provides contextual prompts and safety guidelines when dosage thresholds exceed 40 mg/day.
Includes trigonometric functions and logarithms for general mathematical tasks.
How much does it cost?
- $0.99 one-time purchase on iOS
- Free on Android
The iOS version utilizes a low-cost, one-time purchase model to monetize professional clinical utility.
Who Built It?
ANZCA
Delivering high-scale system utilities for the Xiaomi ecosystem alongside specialized clinical calculators for medical professionals.
Portfolio
10
Apps
Who is ANZCA?
ANZCA maintains a dual-track portfolio strategy: high-volume system utilities integrated into the global Xiaomi hardware ecosystem and niche clinical tools for the Australian medical community. Their primary moat is the massive distribution advantage provided by pre-installation and deep hardware integration on POCO and Xiaomi devices. A key strategic signal is the divergence in maintenance cycles, where specialized medical tools receive recent updates while legacy personalization apps like POCO Launcher remain in a stale update cycle.
Who is ANZCA for?
- Global Android users seeking device optimization
- Specialist pain medicine physicians in Australia
- New Zealand
Portfolio momentum
Maintained a steady cadence with 4 releases across 10 apps in the last 6 months, including a major update 21 days ago.
What other apps does ANZCA make?
What do users think recently?
High confidence · 52 reviews analyzed · Based on 52 reviews. Signal may be noisy.
How did the latest release land?
What is the recent mood?
Recent user voice shows a mixed sentiment. Users appreciate the core calculation functionality provides a reliable and fast experience for daily professional use, but report cursor jumping and input duplication during long addition sequences disrupt the calculation workflow.
What Users Love
What Frustrates Users
What Users Want
What is the competitive landscape for Opioid Calculator?
How's The Medical Market?
**Pricing Strategy**: The iOS version uses a $0.99 one-time purchase model, while the Android version is free. This captures professional clinical utility at a low barrier to entry. **Target Audience**: Pain medicine physicians and clinical staff requiring standardized conversion tools, alongside general users seeking a multi-purpose calculator.
How does it evolve in the Medical market?
Medical Category — The app maintains a top 20 position in the Medical category across multiple international markets, but its #199 Grossing rank in the US signals that monetisation is not scaling with its utility-based install base.
| Country | Category | Chart | Rank | Change |
|---|---|---|---|---|
| 🇨🇱 Chile | Medical | AndroidPaid | #16 | ▼2 |
| 🇮🇱 Israel | Medical | iOSPaid | #78 | ▲1 |
The rivals identified
The Nemesis
- -
Higher rated at 4.9★ vs 4.3★
- -
Provides deep, evidence-based clinical monographs that go far beyond simple calculator functionality.
- -
Maintains a high-frequency update cycle to ensure drug safety data remains current for practitioners.
Contenders
Integrates complex drug-interaction screening tools that provide safety checks beyond basic arithmetic.
Offers a massive, curated database of pharmacology content that serves as a primary clinical decision support tool.
Features peer-reviewed content from a top-tier medical institution, providing a strong competitive advantage in clinical accuracy.
Offers a streamlined, point-of-care interface designed to minimize cognitive load during patient consultations.
Sanford Guide Antimicrobial
★4.8 (4.5K)Antimicrobial Therapy, Inc.
⚡Specializes in high-stakes antimicrobial therapy, capturing a specific, high-value segment of the medical calculator market.
Focuses exclusively on infectious disease protocols, providing specialized decision support that general calculators lack.
Maintains a rapid release cadence to incorporate the latest clinical guidelines and antibiotic resistance data.
Peers
Prioritizes patient-centric features like pill reminders and refill tracking to improve long-term medication adherence.
Builds a community-driven data flywheel by tracking user-reported side effects and medication patterns.
Focuses on long-term trend analysis and reporting, which is critical for patients managing chronic glucose levels.
Provides a robust, established platform for logging health metrics that has been refined over many years.
Doximity
★4.8 (191.5K)Doximity
⚡Operates as a massive professional network for clinicians, offering tools that make a standalone calculator feel like a minor utility.
Provides a comprehensive professional directory and secure communication platform that keeps users within the ecosystem.
Offers high-velocity feature updates including telehealth and news feeds to maintain daily active usage.
mySugr - Diabetes Tracker Log
★4.5 (134.1K)mySugr GmbH
⚡Targets the chronic disease management niche with a gamified, data-rich interface for diabetes patients.
Uses gamification elements to increase user engagement and data logging consistency for chronic condition management.
Integrates with hardware glucose monitors to automate data entry, reducing the manual burden on the user.
New Kids on the Block
Integrates interactive learning modules directly into the clinical reference workflow for medical students and residents.
Utilizes a cross-platform, cloud-synced architecture that ensures seamless transitions between study and clinical practice.
Provides medically-vetted, audio-based translations to ensure accurate communication in high-stakes emergency situations.
Focuses on a niche, high-utility problem that is often overlooked by general-purpose medical reference applications.
The outtake for Opioid Calculator
Strengths to defend, gaps to attack
Core Strengths
- oMEDD calculation engine establishes professional clinical authority
- Lightweight architecture ensures faster startup than system-native calculators
- Safety-prompt integration provides immediate risk mitigation for clinicians
Critical Frictions
- Input duplication bugs disrupt professional accounting tasks
- Low-contrast dark mode interface hinders result visibility
- Incompatibility with newer flagship hardware causes launch failures
Growth Levers
- Integration of institutional-grade clinical guidelines to compete with premium references
- Expansion of currency database to capture international medical markets
- Wearable companion app for hands-free dosage lookup
Market Threats
- UpToDate Lexidrug's institutional-grade pharmacology database
- Doximity's professional network ecosystem
- Tightening clinical safety compliance standards for standalone calculator apps
What are the next best moves?
Rebuild input field logic because cursor jumping is the top workflow complaint → stabilize professional usage
Input duplication is the #1 cited workflow disruption in sentiment analysis.
Trade-off: Pause the currency database expansion — input stability has a higher impact on professional retention.
Audit dark mode contrast because low-contrast gray text is a top readability complaint → reduce churn
Users report needing to restart the app to fix text visibility, indicating a critical UI regression.
Trade-off: Same-quarter capacity available — no major lever displaced.
A counter-intuitive read
The app's lightweight, standalone nature is its primary moat against bloated clinical platforms, provided it can fix the input bugs that currently make it feel like a hobbyist project.
Feature Gaps vs Competitors
- Complex drug-interaction screening (available in UpToDate Lexidrug but absent here)
- Institutional-grade pharmacology monographs (available in Davis's Drug Guide but absent here)
Key Takeaways
- Prioritize input stability to retain professional users who rely on the app for daily accounting.
- Address dark mode contrast to prevent the current churn risk among night-shift clinical staff.
- Evaluate a transition to a professional-grade subscription model to fund the maintenance required for flagship device compatibility.
Opioid Calculator captures professional utility through its oMEDD engine, but technical regressions in input handling and hardware compatibility threaten its clinical adoption, so the team must prioritize stability over feature expansion to protect its category lead.
Where Is It Heading?
Mixed Signals
The market for clinical reference tools is consolidating around high-trust, institutional-grade platforms, leaving standalone calculators exposed to churn if they fail to maintain professional-grade stability. The team must shift focus from general-purpose calculator features to clinical-grade reliability to prevent the erosion of their professional user base.
Input duplication bugs in the latest version disrupt professional workflows, which compounds the rating drag already visible on Android.
The addition of Opioid Safety Resources shows active clinical feature investment, which differentiates the app from generic calculator alternatives.