Longevity · iPhone and iPad

Your body, decoded daily.

Sage turns Apple Health into Recovery, Sleep and Energy scores and a weekly Bio Age estimate, then keeps your supplements, water, fasting and routines on track, with an AI coach for everything in between.

Download on theApp Store AndroidGoogle PlaySoon

Free to download · Works with Apple Health · See the app

The fasting screen at 14 hours, in light ketosis, with the phase ring, an End fast button and streak stats. Sage’s Body tab: Sleep 99, Recovered 89 and Energy 79 rings, a Bio Age of 29.8 years, and steps, sleep, active energy and water tiles. The Protocol tab: level 56 Diamond, fasting and supplement stats, and the morning stack with streaks.
  • 3daily scores from Apple Health
  • 7fasting phases, hour by hour
  • 1AI coach that knows your goals
  • 12languages

Inside Sage

One app for the whole routine.

The panels below behave like the app. Tap a ring, drag through a fast, pour a glass, tick off your stack.

  1. 01Body scores and Bio AgeRecovery, Sleep, Energy and a weekly estimate
  2. 02FastingSeven body phases, unfolding hour by hour
  3. 03WaterOne-tap cups that sync to Apple Health
  4. 04SupplementsReminders, streaks, XP and levels
  5. 05AI coachShould I eat this, menus, cravings and chat
  6. 06Blood markersAdd a lab report to sharpen your Bio Age
  7. 07Pulse and routinesDaily targets and guided routines
  8. 08WidgetsScores, fasting and your stack on the Home Screen

01Body scores

Wake up to three scores.

Sage reads sleep, heart rate, HRV, resting heart rate, activity and more from Apple Health, and turns them into three scores every morning. Once a week it estimates your Bio Age and shows what is pulling it younger or older.

  • Recovery, Sleep and Energy, from 0 to 100
  • A weekly Bio Age estimate with the markers that move it
  • Steps, sleep, active energy and water against your daily targets

RecoveredLed by HRV against your own baseline, with resting heart rate and last night’s sleep. Higher means ready for more.

Bio Age
29.8yrs
2.2y younger

Tap a ring to see what feeds it.

14h 00m2h 00m left of 16:8
Current phaseLight ketosis

Liver starts making ketones. Mental clarity often kicks in around here.

Next: Autophagy ramping in 2h 00m

02Fasting

Fast with a clear plan.

Start a fast and watch seven body phases unfold, from fed state to deep reset. Streaks, your longest fast and total hours sit right under the ring, and a Live Activity keeps the timer on your Lock Screen.

Drag the slider or tap a phase. Phase timings are general guidance, not medical advice.

03Water

Drink more, effortlessly.

A cup, a bottle or a big bottle, one tap each. Sage sets a daily target, draws your rhythm through the day, and saves every drink to Apple Health. It never writes anything else there.

  • Customise the cups to the glasses and bottles you use
  • Today’s rhythm, with any drink easy to remove
  • A daily target that fits you, set in your profile
Today
1,400ml
60%of 2,340 ml
4 drinks today

Tap a cup.

04Supplements

Streaks that keep you going.

Add your stack once, with the dose and the time of day. Sage reminds you, keeps a streak for every supplement, and turns each dose into XP on the way up the ranks.

  • Several doses a day, each with its own reminder
  • A streak per supplement, and stats on your top ones
  • XP, levels and ranks, and a streak freeze for the odd missed day
Lvl 56 Diamond860 / 2,016 XP

Morning · 0/3 taken

Tick one off.

05AI coach

A coach in your pocket.

Ask about a meal, a menu or a craving and get an answer shaped by your goals, your stack and your day. The coach knows what you are taking and what you have logged.

The Should I eat this verdict for a Greek yoghurt bowl: Eat freely, with ingredient flags, supplement interactions and macros.
Should I eat this?Snap a food and get a verdict for your goals, with the macros.
Eating out at a Mediterranean grill: the best pick on the menu, and dishes to skip.
Eating outPhotograph a menu and see the best pick, and what to skip.
A chat with Sage about what to eat before a morning workout.
Ask anythingFood, fasting or your stack, answered in a chat.
  • Should I eat this?
  • Snap and log
  • Eating out
  • Cravings
  • Compare foods
  • Ask AI

The AI tools are part of Sage Pro. AI guidance is for general wellness, not medical advice.

06Blood markers

Your labs, put to work.

Type in your blood markers or upload a lab report, and Sage folds them into your Bio Age estimate alongside the data from Apple Health. Each marker shows where it sits against its optimal range.

  • hs-CRP, HbA1c, fasting glucose, cholesterol and more
  • See what is pulling you younger, and what is adding years
  • Estimates for general wellness, never a diagnosis
The Bio Age screen: 29.8 years, 2.2 years younger than a calendar age of 32, with what moves your age and a marker breakdown. The blood markers sheet listing hs-CRP, HbA1c, fasting glucose, triglycerides, HDL and LDL cholesterol with optimal ranges.

07Pulse and routines

Small habits, every day.

Pulse keeps today’s targets in one place, and routines give you a plan to follow when you want one.

Daily targets

Steps, sleep, active energy, water and weight, each with a goal and a week of history.

Guided programs

Eight ready-made plans, from Sleep reset and Energy boost to Stress reset and Lean bulk, one day at a time.

New Day and weekly recaps

Each morning Sage sums up yesterday, and each week brings a recap of your best days and trends.

08Widgets

Your day at a glance.

Scores, fasting, supplements, water, steps and today’s targets on your Home Screen, and a Live Activity that follows your fast on the Lock Screen and in the Dynamic Island.

The Home Screen with Sage widgets: the three score rings, the fasting timer in light ketosis, and today’s supplement stack.

Privacy

Your health data, handled with care.

Sage asks for what it needs and says why. The privacy policy lists every piece of data and where it goes.

Apple Health, on your terms

Sage reads the metrics behind your scores. The only thing it writes back is the water you log.

No sign-up to start

Start without an account. Link Apple or Google later to keep your data across devices.

No ads, no trackers

No advertising, no analytics SDKs and no data sold. The AI tools ask for your consent first.

Your data, your call

Delete your account from Settings, or write to us to have everything erased. How it works.

Start with today.

Sage is free to download on iPhone and iPad, with Sage Pro for the AI coach and the full set of scores. The Android version is on its way.

Download on theApp Store AndroidGoogle PlaySoon

Works with Apple Health · For general wellness, not medical advice