Health & habits

Your whole day. One app.

HealthDay is the privacy-first iPhone app for what you eat, how you move, how you sleep and how you train, brought together in one daily view.

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HealthDay Today screen showing 1,010 of 1,780 kcal with protein, carbs, fat, active energy, sleep and weight
Screens

See HealthDay in action.

Six screens from the app. Scroll sideways to see them all.

HealthDay screen: Today
TodayCalories, macros, sleep, weight and your daily agenda on one screen.
HealthDay screen: Meal photo
Meal photoAI estimates calories, carbs, protein and fat from a photo of your plate.
HealthDay screen: FitPlan
FitPlanA strength plan that schedules workouts and logs every set.
HealthDay screen: HealthDay Score
HealthDay ScoreOne 30-day score for nutrition, activity, sleep and consistency.
HealthDay screen: Trends
TrendsWeight trend, statistical slope and a projected goal date.
HealthDay screen: Calorie target
Calorie targetA daily food target based on your body, goal and activity level.
Key Features

Built for everyday use.

Snap your plate

Take or choose a photo of your meal. HealthDay estimates calories and macros in seconds.

  • Plate diameter keeps portions to scale
  • Shows a recognition reliability percentage
  • Re-assess before you save, or scan a barcode

Your whole day at a glance

The Today screen brings eating, moving, sleeping and weighing together.

  • Calories against your personal goal
  • Active energy synced from Apple Health
  • Daily agenda with reminders and a coach card

FitPlan strength training

A rolling training calendar built around your week and experience.

  • Compound lifts with reps-in-reserve targets
  • A lighter deload week every fourth week
  • Log load and reps, or swap an exercise

Trends that add up

Charts for weight and the metrics that sit behind it.

  • 7 days to all time, with a trend line
  • Steps, body fat, resting heart rate, HRV, VO2 max
  • Progress pictures next to your numbers

A calorie target made for you

Enter your stats and goal, and HealthDay does the maths.

  • BMR with the Mifflin-St Jeor formula
  • Maintenance and planned weekly change
  • Current and target BMI

Works with Apple Health

Optional, and you decide per data type what HealthDay may read.

  • Reads weight, body fat, sleep, steps, workouts
  • Writes only weight and hydration you log
  • Keeps working if you say no
HealthDay Score

One score for healthier habits.

The HealthDay Score rates the past 30 days from 0 to 100. Each category counts for part of the total, and the app shows how complete the data behind it is.

How the score is made up

Nutrition22%
Activity20%
Body & vital context20%
Sleep & recovery18%
Hydration & wellbeing14%
Consistency & habits6%
Privacy

Data stays on your phone.

Everything you log is stored on your iPhone in an encrypted store (AES-GCM), with the key held in the iOS Keychain. There is no account to create, and you can export your data at any time.

HealthDay shows estimates and trends to help you build habits. It is not a medical device and does not give medical advice.

Good to know

No advertsNo accountEncrypted on deviceApple Health optionaliPhone, iOS 15+Internet only for photo and barcode lookup
Download on the App Store