DayByDay Tracker

The weight loss journey is lonely. The scale lies. And nobody hands you a map for life on a GLP-1.

DayByDay is the companion that finally gets it.

One calm, private place for everything that actually moves the needle — your food, your weight, your medication, your sleep, your body. Connect Apple Health and much of it fills in. And every morning, Dayo, your AI coach powered by Anthropic's Claude, reads your last 30 days and tells you, in plain words, what's working and what's not.

Losing, holding your goal, or coming back from a regain — there's no shame here. Just your data, and a path forward.

MEET DAYO, YOUR AI COACH
• Daily Coach Notes written from your real numbers, not generic tips
• Every claim backed by evidence you can tap
• Knows your medication, your dose, and where you are in the journey
• Names the stalls and plateaus, and shows you what's actually changing

FOOD LOGGING THAT DOESN'T FEEL LIKE A CHORE
• Snap a photo of your plate and let AI turn it into calories and macros
• Scan a barcode or search millions of foods, powered by FatSecret — even offline
• Save favorites and copy yesterday, so most days take just a few taps
• Calories, protein, carbs, fiber, and water at a glance
• Let Dayo connect what you eat to how you feel — insight, never judgment

BUILT FOR GLP-1
• A live medication level, and a countdown to your next shot
• Missed-dose guidance that follows your medication's FDA label
• Pen storage countdown so a $1,000 pen never gets tossed by mistake
• Injection-site rotation advisor
• Side-effect tracking with peak-day patterns for your provider
• Pharmacy and refill hub with prior-auth reminders
• Ozempic, Wegovy, Mounjaro, Zepbound, Saxenda, Rybelsus, and compounded
• Travel-aware dose timing, pause mode, and a medication switcher
• A doctor-ready visit summary PDF

YOUR BODY, DEEPER
• A weight trend that cuts through daily water-weight noise
• Body-fat percentage goal with projections
• DEXA scan tracking with lean-mass-loss alerts
• Waist, chest, and neck measurements, plus clothing sizes
• A private, encrypted progress-photo timeline

SLEEP, ENERGY, AND RECOVERY
• A personal Energy Schedule that predicts your highs and dips each day
• Sleep stages, a Sleep Score, and a Resilience Score
• Overnight blood oxygen, heart rate, and breathing rate
• Wellue / Viatom O2 Ring sync

STAY IN IT
• A Momentum Score that rewards showing up
• Milestone celebrations at 5%, 10%, or your goal
• Share cards for your wins, straight to Instagram or Stories
• Home Screen and Lock Screen widgets: weight, medication level, next-shot countdown

PRIVATE, ALWAYS
• Encrypted at rest, private by default
• One tap to delete everything
• No ads, ever, and your data is never sold
• Fully exportable, anytime

START WITH 14 DAYS FREE
• Try Plus free for 14 days — food logging and all — then keep going free or subscribe. Cancel anytime.
• Free: log your weight, doses, sleep, exercise, and labs — no time limit, no credit card
• Core ($4.99/mo or $49.99/yr): Dayo your AI coach, trends, projections, Apple Health sync, and exports
• Plus ($9.99/mo or $99.99/yr): everything in Core, plus food logging (barcode, photo-of-plate, FatSecret) and food-aware AI coaching

Coming from MyFitnessPal or Lose It!? You'll feel right at home — plus everything a food tracker can't see: your medication, your sleep, your body, all in one place.

Privacy Policy: https://mydaybyday.app/privacy
Terms and Conditions: https://mydaybyday.app/terms
Support: https://mydaybyday.app/support

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IMPORTANT: DayByDay is a personal health tracking tool designed to help you record and visualize your health journey. It does not provide medical advice, diagnosis, or treatment. DayByDay is not a medical device and has not been evaluated or approved by the FDA or any regulatory authority. All calculations, estimates, and visualizations are for informational purposes only. Always consult your healthcare provider before making any decisions about medication or treatment.