DayByDay Tracker

Personal Progress & Insights

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

Snap a photo of your plate, track your GLP-1, and wake up to what's actually working. Dayo, your AI coach, reads your real data and tells you. No shame, just progress. 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 — 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.

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Bug fixes. Quality of life enhancements. New user on boarding improvements.

The developer, Christopher Kaczkowski, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Linked to You

    The following data may be collected and linked to your identity:

    • Health & Fitness
    • Contact Info
    • Identifiers
    • Sensitive Info
  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Other Data

Privacy practices may vary, for example, based on the features you use or your age. Learn More

The developer has not yet indicated which accessibility features this app supports. Learn More

Seller
  • Chris Creates, LLC
Size
  • 92 MB
Category
  • Health & Fitness
Compatibility
Requires iOS 16.0 or later.
  • iPhone
    Requires iOS 16.0 or later.
  • iPad
    Requires iPadOS 16.0 or later.
  • Mac
    Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
  • English
Age Rating
13+
  • 13+
  • Contains
    User-Generated Content
    Health or Wellness Topics
In-App Purchases
Yes
  • Day By Day Plus Annual $99.99
  • Day By Day Plus $9.99
  • Day By Day Core Yearly $49.99
  • Day By Day Core Monthly $4.99
  • DayByDay Premium Monthly $5.99
  • DayByDay Premium Yearly $59.99
Copyright
  • © 2026 Chris-Creates