Cadence
An AI-powered circadian rhythm predictor that analyses your Apple Health data - or a short quiz - to map your body clock and deliver personalized sleep, energy, and productivity suggestions.
Overview
What is Cadence?
Cadence analyzes your Apple Health data to discover your chronotype - your biological sleep-wake preference - and builds a personalized profile showing when your body is primed to focus, rest, and recover.
The built-in AI chatbot means you can ask follow-up questions about your results, dig into the science, or get specific advice for your schedule - all without leaving the app.
The Problem
Sleep advice online is generic. "Go to bed earlier" doesn't account for the fact that every person's circadian rhythm is different. There weren't many easy ways to get a personalized, data-driven picture of your own body and optimized sleep pattern without expensive lab tests.
The Solution
Use the health data people already have on their phones - or a quick quiz for those without - and an AI model to surface genuinely personalized insights.
What I Learned
When working under a time constraint like I did, it is important to make decisions and execute quickly and efficiently.
Prompt engineering for health data requires careful framing to get consistent and responsible output.
Building a fallback (the quiz) for users without health data was a decision I added at the end, but the right call - it greatly expanded the addressable audience.
Next Project
RAG Document Demo