Stress AI

Feeling the pressure?

Discover what your body's vital signs can reveal about stress.

What is Stress AI?

Helfie’s Stress AI uses Health Intelligence to analyse heart rate variability and other stress indicators, helping you understand how your body may be responding to stress. Simply complete the check on your phone and see your results in seconds.

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Helfie Stress AI: science-backed accuracy.

Physiological stress (accuracy)

How it works Stress AI

Every heartbeat creates subtle changes in blood flow beneath your skin, which can reveal physiological signs of stress.

During a 30-second facial scan, Helfie uses remote photoplethysmography (rPPG) to detect these changes through your smartphone camera. Helfie’s Health Intelligence analyses these signals, including heart rate variability, to estimate your physiological stress level and provide personalised insights.

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Stress AI - The facts.

What is stress?

Stress is the body's natural response to physical, mental, or emotional demands. It triggers physiological changes, including increases in heart rate, breathing rate, and the release of hormones such as adrenaline and cortisol.

Short-term stress can help you respond to challenges. However, prolonged stress can affect sleep, cardiovascular health, immune function, and overall wellbeing.

Common causes include work pressure, relationships, and other everyday pressures. Physical factors such as poor sleep, overexertion, and illness can also trigger a stress response. Read More…

Why check for stress?

Stress isn't always obvious, but your body can show physiological signs of stress even when you don't consciously feel overwhelmed.

Helfie monitors indicators such as heart rate variability to help you better understand how your body responds to everyday pressures and recognise changes over time.

Regular checks can help you become more aware of your body's responses, make informed lifestyle choices, and take proactive steps to support your health and wellbeing.

Got a question? Just ask.

Your personal Health Intelligence (HI) is always there, ready to provide clarity and deeper insights.

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Helfie Stress AI conversational chat interface on a smartphone

More to know about Stress AI.

Accuracy

Helfie’s Stress AI is built on rigorous scientific validation and medical expertise.

Accuracy:
- Physiological stress: 82% accuracy
- Blood oxygen (SpO₂): ±2 percentage points
- Heart rate variability (HRV): ±10 ms
- Respiratory rate (RR): ±3 breaths per minute
Algorithm
- Convolutional neural network (CNN)
Capture mechanism
- Facial video scan via smartphone camera
Training data
- 100,000 image frames
Model parameters
- 16 million
Research and clinical validation
- Helfie R&D Labs. Adapted from published and peer-reviewed clinical research.

How does Helfie track changes in your stress levels over time?

Helfie keeps a record of your stress checks, allowing you to monitor your results over time.

Regular checks can help you identify patterns in your physiological stress levels and understand how your body responds to everyday pressures.

You can also discuss your results with your personal Health Intelligence to explore possible factors influencing changes, such as sleep, exercise, and lifestyle habits.

How does Health Intelligence work?

Helfie’s Health Intelligence (HI) brings together information from your health checks, conversations, uploads, and history, then connects it with a vast body of medical knowledge to build an increasingly informed picture of your health.

Rather than relying on a single AI model or looking at each result in isolation, HI uses multiple layers of intelligence and machine learning to interpret health signals, connect related information across different areas of your health, and understand those results in the context of you.

It also maintains an active memory of your health journey, so previous results, patterns, and interactions can inform what comes next.

The result is intelligence that is personal, contextual, and designed to help you better understand and manage your health over time.

How do my health checks and conversations work together?

A health check gives your Health Intelligence new information about you. You can then talk to your HI about those results, ask what they mean, explore possible reasons for changes, and understand them in the context of previous checks and health history.

The conversation also becomes part of that context. So when you check again later, your HI can consider both your new results and what it’s learned from earlier checks and conversations.

This is how it builds a more detailed, connected picture of your health over time.

Can I share my stress check results with my GP?

Helfie makes it easy to share your check results with your doctor or healthcare provider, giving them additional information to support their assessment.

Sharing results from multiple checks, alongside your symptoms and health history, can help your healthcare provider understand changes in your physiological stress levels over time and make better-informed decisions.

How does Helfie personalise my stress assessment?

Helfie’s Health Intelligence can consider your stress check results alongside information from your health history, previous checks, and conversations to provide more personalised insights.

By connecting these different sources of information, Helfie can help you better understand your physiological stress responses in the context of your overall health and wellbeing.