HealthHub Disease Risk Simulator
Singapore's premier health management platform introduces a powerful new feature to help citizens understand and mitigate their risk of chronic diseases. The Disease Risk Simulator empowers users with personalized health insights and actionable recommendations in under a minute.

by Herchelle Valentina

Product Summary
HealthHub is Singapore's go-to app for managing personal health records and screenings. It helps users stay informed and take preventive action through intuitive interfaces and personalized insights.
The new Disease Risk Simulator makes it easy to check your risk for conditions like diabetes or heart disease in under a minute. It provides a personalized score and actionable tips—boosting awareness for users while enabling early intervention opportunities for HPB and MOH.
Accessible Health Management
Singapore's premier platform for personal health records and screening management
Quick Risk Assessment
Check disease risk in under 60 seconds with personalized scoring
Preventive Action
Receive tailored recommendations to reduce health risks
Target Audience
HealthHub's Disease Risk Simulator is designed to serve both individual users and institutional stakeholders across Singapore's healthcare ecosystem. Our primary focus is on reaching those who can benefit most from early risk assessment and preventive action.
Primary Users
  • Working professionals (ages 30–55)
  • Caregivers supporting family health
  • Health-conscious individuals
These users seek convenient ways to monitor health risks and take preventive measures within their busy schedules.
Institutional Stakeholders
  • MOH partners
  • HPB program leads
  • Public healthcare practitioners
These stakeholders leverage the platform to promote preventive care and improve population health outcomes.
Strategic Rationale
Most individuals remain unaware of chronic disease risks until symptoms appear, and existing screening reports are difficult to interpret. Risk is often perceived as abstract, limiting preventive action.
Government Goals
Reduce chronic disease burden and improve health literacy
Market Opportunity
Rising chronic conditions with limited preventive features
Key Assumptions
Early awareness drives screening compliance
We believe that early awareness leads to higher screening compliance, and simple, engaging tools drive better user behavior. Prevention ultimately lowers long-term healthcare costs for the government while addressing Singapore's rising chronic condition rates.
Key Features & User Experience 🧭
Overall Navigation & Layout Bottom NavBar Tabs (Persistent):
  • Home → /dashboard
  • Trends → /trends
  • Risk → /simulator
  • Actions → /actions
  • Profile
1. Dashboard Page: /dashboard (default landing screen)
Main Components:
  • Header:
  • Greeting: “Hello, Mei Ling”
  • Notifications icon (with badge if notifications > 0)
  • Health Summary Card:
  • Title: “Your Health Summary”
  • Metrics shown in cards: Blood Pressure, Cholesterol, Glucose, BMI, Steps
  • Each metric shows: Name, Value, Status Tag, and Trend icon (if applicable)
  • Status-based color coding
  • CTA: View Detailed Trends → navigates to /trends
  • Risk Assessment Card:
  • Title: “Your Risk Assessment”
  • Risk Meters for: Diabetes, Hypertension, Heart Disease (5-year % risk)
  • CTA: Run Full Risk Simulation → /simulator
  • Daily Habits List:
  • Title: “Today’s Habits”
  • List of habit items (e.g., “Walk 10 mins after lunch”)
  • Completion toggle
  • Streaks shown with flame icon
2. Risk Simulator Page: /simulator
Main Components:
  • Header:
  • Back button (→ /dashboard)
  • Title: “Risk Simulator”
  • Risk Profile Overview:
  • Meter for Type 2 Diabetes
  • Key risk factors in card (Age, BMI, Physical Activity, Family History)
  • What-If Scenarios:
  • Lifestyle changes and estimated impact on risk (e.g., "Lose 5kg → drops risk to 10%")
  • CTA: Get Your Action Plan → /actions
Problems Solved
The Disease Risk Simulator addresses key challenges faced by Singaporeans in managing their health proactively. By providing intuitive solutions to common barriers, we enable better health outcomes.
Edge Cases & Error Handling
🛑 Missing Required Inputs Trigger
Scenario: User skips mandatory fields in the risk input flow (e.g., age, gender).
Page: /simulator/start
System Behavior: Form is not submitted.
Field-level error: 🔴 “This field is required.”
Scrolls to first invalid field.
User Options: Highlighted fields with tooltip. Button disabled until completion.
🔄 Incomplete Clinical Data Trigger
Scenario: User provides some but not all clinical metrics (e.g., enters BP but skips cholesterol).
Page: /simulator/start
System Behavior: System runs simulation using lifestyle + available clinical data. Risk confidence meter shown (e.g., “Estimated Risk – Medium Confidence”).
Tooltip: 🛈 “Add more clinical data for higher accuracy.”
User Options: CTA: “Add Clinical Details” → Opens optional input modal.
⚠️ Network Timeout During Score Generation Trigger
Scenario: User submits inputs but request times out or fails.
Page: /simulator/result
System Behavior: Error Banner: ⚠️ “We couldn’t generate your score right now. Please try again.” Retry
Button: “Try Again”
Logging: System captures timestamp, input type, and failure code.
User Options: Retry request. Option to “Save Inputs & Try Later.”
❌ Risk Score = High Risk Trigger
Scenario: User’s result crosses threshold for High Risk (e.g., 35%+ chance of diabetes).
Page: /simulator/result
System Behavior: Result card uses red styling.
Emotional support prompt: “This doesn’t mean you have a disease, but it’s time to act.”
Next CTA: “Book Screening Now” or “Talk to a Doctor.”
User Options: Direct link to screening booking. Export summary PDF to consult doctor.
Design Assets
Release Requirements
The successful implementation of the Disease Risk Simulator depends on meeting specific requirements across functionality, usability, reliability, performance, and supportability dimensions.
Functionality
  • Data input flow for lifestyle and clinical information
  • Evidence-based risk score generator
  • Visual results dashboard with condition-specific meters
  • Actions hub with recommended next steps
Usability
  • Complete simulation process in under 60 seconds
  • Easy-to-interpret risk results for non-medical users
  • Fully responsive layout for all mobile and tablet devices
Technical
  • Stable algorithm handling incomplete data
  • MOH/HPB compliant data security
  • Fast load times (< 2 seconds)
  • Built-in help and user feedback mechanisms
Timeline & Constraints
The Disease Risk Simulator will follow a structured development timeline with key milestones aligned to HPB's national health initiatives. Our approach accounts for various constraints that shape implementation priorities.
Prototype Completion
2nd month: Functional prototype ready for internal testing and stakeholder review
Beta Launch
3rd month: Pilot rollout aligned with HPB's National Screening Campaign
Public Launch
4th month: Full integration within HealthHub, timed with the Healthier SG update
Key constraints include limited input data in Phase 1 (no wearables or real-time clinical sync), alignment with HPB calendar for maximum visibility, strict data privacy compliance, and mobile-first optimization requirements.
Competitive Landscape
Understanding the existing health technology ecosystem helps position the Disease Risk Simulator effectively. We've analyzed key competitors and inspiration sources to identify opportunities for differentiation.
Apple Health Trends
Tracks vitals and shows changes over time using device data, but lacks population-level risk models or preventive action nudges that would make it truly effective for chronic disease prevention.
Singlife App
Offers wellness programs linked to insurance benefits, but remains restricted to policyholders and lacks integration with national screening initiatives that could provide broader impact.
AIA Vitality
Encourages healthy behavior with rewards for screenings and physical activity, but operates outside the public health ecosystem and follows a commercially-driven approach to wellness.
Future Roadmap
While the initial release delivers core functionality, our vision extends to several exciting enhancements that will further elevate the Disease Risk Simulator's impact on Singapore's health outcomes.
"What-If" Simulation
Dynamic lifestyle variable adjustment showing real-time risk score changes
Wearable Integration
Auto-sync with Fitbit, Garmin, and Apple Health for enhanced data
Community Challenges
Group habit-building with leaderboards and social support
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Clinic Feedback Loop
Direct risk results sharing with healthcare providers' EMR systems
Additional opportunities include insurance program linkages with partners like AIA Vitality or Singlife, and pre/post screening comparisons to visualize improvements and build motivation for continued health engagement.