iTracker vs Dawn Phenomenon

Living with diabetes already demands constant attention. You shouldn’t also have to carry every number in your head. iTracker helps you learn from your own history — so you don’t repeat the same mistake twice. Instead of starting from zero every meal, you start from experience. You open the app. Your data is there. Your next decision is clearer.

Dawn Phenomenon analyzes your overnight glucose data and shows the patterns most people never see — when your sugar bottoms out, when it starts rising, and whether last night fits the classic "dawn phenomenon" pattern. • Reads your CGM glucose readings and sleep window from Apple Health • Great for users of a GLP-1 • Detects the dawn phenomenon (overnight low to morning rise of 30+ mg/dL by default) • Differentiates dawn phenomenon from the Somogyi effect (a rebound after an overnight hypo) • Shows last night with an interactive curve, nadir, peak, waking reading, and time-in-range • Swipe to revisit the last 5 nights • Trends tab overlays your week, shows a "dawn score" (how often dawn pattern appears), the average rise, and how sleep duration correlates with rise size • Export a PDF report of any single night or your full week to share with your endocrinologist **Privacy first** All analysis happens on your device. Your glucose and sleep data never leave it. No accounts. No third-party services. Settings sync via iCloud key-value storage only. **Customize the analysis** Tune the rise and hypo thresholds in Settings to match your own targets. Choose whether to pull bed/wake times from Apple Health's sleep samples, or set them manually. **Important** This app is for informational and educational purposes only. It is not a medical device and is not intended to diagnose, treat, cure, or prevent any disease or condition. Always consult your healthcare provider before changing your treatment.