SleepDebtCalculator: Personal Sleep Deficit Tracker
Calculates cumulative sleep debt across weeks and correlates it with mood/energy logs to show how much sleep someone actually needs to feel optimal.
The Problem
People know they should sleep 8 hours but don't know if they're sleep-deprived because they don't track their actual sleep debt over time. They feel bad but can't connect it to their sleep deficit. Generic sleep apps track hours but don't help people understand their personal sleep requirement or recovery trajectory.
Target Audience
Knowledge workers (25-45) who track health metrics obsessively, have inconsistent schedules, and want data-driven insights on sleep's ROI on their productivity.
Why Now?
Sleep wearable adoption is at all-time high (Oura, Whoop, Apple Watch), generating abundant data that existing apps don't analyze smartly; people are hungry for personalized health insights.
What's Missing
Existing sleep apps are either wearable dashboards (no debt calculation) or generic sleep hygiene coaches (no correlation engine). None dynamically calculate a user's personal sleep requirement based on their own mood/energy patterns.
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