4Habits vs D

Build healthier habits. Track your progress. Live healthier for longer. 45% of our daily actions are guided by habits. Prioritizing a healthy lifestyle and good habits is the most effective way to improve health, longevity, and quality of life. Sustainable practices such as a balanced diet, regular physical activity, stress management, and quality sleep provide lasting benefits. While medications can address specific issues, building healthy and lasting habits allows us to tackle the root causes of many health challenges, ensuring long-term well-being. 4Habits helps you improve your lifestyle through small, personalized actions across four key areas: Movement, Diet, Mind and Recovery. Start by discovering where you stand, get daily activities based on your needs, set your weekly goals and track your progress through your 4H Index. Everything you need to turn healthy intentions into everyday habits — in one app. HOW 4HABITS WORKS ASSESS YOUR LIFESTYLE Complete simple assessments across Movement, Diet, Mind and Recovery to understand your current habits and identify where you can improve. GET PERSONALIZED DAILY ACTIONS 4Habits suggests practical activities based on your needs and progress, helping you focus on the areas that matter most to you. BUILD YOUR WEEKLY ROUTINE Set goals, turn suggested activities into habits and use reminders to stay consistent throughout the week. TRACK WHAT MATTERS Keep track of physical activity, nutrition, sleep, mindfulness, cognitive stimulation, social activities and other behaviors that contribute to your daily wellbeing. SEE YOUR PROGRESS WITH THE 4H INDEX Bring your lifestyle into one clear view. Your 4H Index helps you understand your balance across Movement, Diet, Mind and Recovery and see how your habits evolve over time. MORE THAN A HABIT TRACKER 4Habits brings different dimensions of a healthy lifestyle together in one experience: • Movement — track physical activity, workouts and exercise goals • Diet — monitor food groups, servings and nutrition goals • Mind — support mindfulness, social connection, cognitive stimulation and emotional awareness • Recovery — keep track of sleep, fasting and recovery-related activities GUIDANCE THAT ADAPTS TO YOU 4Habits uses AI-driven personalization to help turn your assessments, goals and progress into relevant actions you can take every day. Instead of trying to change everything at once, focus on small steps that fit into your life and build consistency over time. GO FURTHER WITH 4HABITS PREMIUM Unlock additional tools to make your experience more personalized and engaging, including personalized goals, workouts and exercises, cognitive training activities, emotional journaling, community activities and additional content. Disclaimer: This app provides information and suggestions on wellness but is not a substitute for professional medical advice. Always consult a healthcare professional before making any changes to your routine or health-related decisions. Terms of Use and Privacy Policy: https://www.4habits.health/privacy

Know exactly how much vitamin D you're getting. Every day. D-Fine tracks your vitamin D from three sources — sunlight, food, and supplements — and tells you if it's enough, based on your skin, your location, and the time of day. THE PROBLEM Vitamin D deficiency is one of the most common in the world, even among people who spend time outdoors. The issue isn't laziness. It's that no one can tell how much sun they actually need. It depends on where you live, the time of day, your skin type, what you're wearing. You can't figure that out by feel. THREE SOURCES, ONE NUMBER Until now, there was no way to see all the sources of vitamin D together. D-Fine combines sunlight, food, and supplements into a single daily figure — your IU today versus your personalized daily target. If you're taking a supplement, you'll finally know whether it's the right dose for you, today, in this season. WHAT D-FINE DOES Sunlight — D-Fine reads your time in daylight from your iPhone and Apple Watch, then calculates the IU your skin actually synthesized, factoring in UV index, sun angle, cloud cover, your Fitzpatrick skin type, how much skin is exposed, and any SPF you logged. Food — Log meals containing vitamin D. D-Fine adds the IU to your daily total. Supplements — Track your daily supplement dose. D-Fine warns you before you cross safe thresholds. WHO IT'S FOR People who live far from the equator, work indoors, have darker skin, are over 50, or just want to stop guessing. PRIVACY All processing happens on your device. Your profile syncs through your private iCloud container — only you can read it. Anonymous usage data is strictly opt-in (default OFF), uses a non-persistent install ID, and contains no Apple identifiers or personal information. APPLE WATCH With an Apple Watch, D-Fine measures your Time in Daylight continuously and passively, the way Apple intended. Without it, the app falls back to estimating from outdoor workouts and UV conditions — still useful, just less precise. D-Fine is not a medical device. It's a science-based calculation tool to help you understand your vitamin D intake. For medical concerns, talk to your doctor. Privacy Policy: https://d-fine.app/privacy Support: https://d-fine.app/support