D³ Daily Diet Diary is a private, ad-free nutrition and wellness tracker that lives entirely on your phone — no accounts, no cloud, no data collection.
Log, score, and analyze your nutrition and wellness habits — all in one place, all on-device.
Rate your diet quality (QUAL) each day. A single score that summarizes how well you ate, with weekly averages and visual trends.
Track your weekly indulgences against a configurable budget. Green when you're under, amber when close, red when over.
Log breakfast, lunch, dinner, and snacks as free-form notes. No calorie counting — just awareness of what you ate.
Track walks, runs, bike rides, gym sessions, yoga, yard work, and more — by distance or duration.
Log how you feel with custom symptom and mood tags. Felt Great, Knee Pain, Low Energy — you define what matters.
Log weekly weight and view a neutral trend chart — no green for loss or red for gain, because everyone's goals are different.
After 30+ days of logging, D³ automatically detects patterns between foods, medications, and your health outcomes.
Sparkline charts for diet quality, S&S, exercise, weight, and health notes across 3 months, 6 months, a year, or all time.
Export beautiful weekly, monthly, and trends PDF reports — perfect for sharing with a doctor, dietitian, or personal trainer.
D³ was built from the ground up with privacy as a core principle — not an afterthought.
D³ works completely offline. All data is stored locally on your device using your phone's built-in secure storage.
No signup, no login, no email address. Your health data belongs to you — not to a tech company.
We don't track which features you use, how long you spend in the app, or anything else. Zero telemetry.
D³ is completely free with no ads and no in-app purchases. No subscription required, ever.