You'll live about
78 years.

Let's make more of them good.

66 years in good health12 years in poor health
Get the app Five stars on the App Store

Life expectancy vs. healthy life expectancy, United States (WHO).

The Vitals screen: Vitality Index 82, Excellent, climbing over 30 days with a projection to 88 and Behavior and Physiology bars

The reframe

Lifespan is how long you live.
Healthspan is how long you live well.

Only one of them is worth optimizing.

The science

Aging stopped being a mystery.

Decades of research agree on what predicts a longer, healthier life.

Higher VO2 max — no ceiling on the benefit.JAMA Network Open, 2018
Regular sleep — lower risk of early death.Sleep, 2024
Strength training — 10–17% lower risk of death.Br J Sports Med, 2022
Higher HRV — a more resilient heart.Framingham Heart Study

Every one of them measurable. From your wrist. See the full science

The problem

Your watch measures all of it.
And tells you nothing.

HRV42 ms
RHR58 bpm
VO2 max41.2
Deep1h 12m
REM1h 48m
Steps8,432
Active512 kcal
Exercise34 min
Stand11 h
Respiratory14.8
Wrist temp−0.2°
In bed7h 51m

Forty numbers is data. It isn't an answer.

The answer

Meet the Vitality Index.

One number, 0 to 100. Your healthspan, measured.

In your pocket

This is what it looks like.

The Vitality Index read: 82, Excellent, up 2 over 7 days, with the 28-day trend line and the day's focus it comes from
One honest read — and where it comes from.
Today's Focus: a hard training day, justified by optimal resting heart rate and HRV
A hard day — because you earned it.
A synqIQ chat answering with the user's own numbers: HRV 68, resting heart rate 48, Index up from 74 to 82
Ask why. Get your numbers.
The Weekly Report: up 23 for the week, with wins listed and score movers ranked
Your week, scored.
Deep Analysis: 90-day patterns with confidence percentages
Proof, not vibes.
The Night Report: sleep scored 88 out of 100 with every point itemized by duration, awake time, deep, and REM
Your night, itemized.

From the App Store

Don't just take our word for it.

Real reviews from the App Store. Read them all.

Inside the Index · The first half

Half is what you do.

Sleep on schedule15 pts
Cardio that counts16 pts
Strength, twice a week14 pts
Move all day5 pts

Fifty points for behavior. Yours to earn — starting today.

Inside the Index · Counting it

Earn points. Raise your score.

An Apple Watch Ultra on a clenched wrist, its face showing activity rings and workout complications

Track every workout on your Apple Watch — the run, the lift, even the walk. Each session earns points toward your fifty.

synqology reads it all automatically through Apple Health. No manual logging.

Inside the Index · The second half

Half is how your body responds.

Heart adaptability20 pts
Cardio fitness (VO2 max)15 pts
Restorative sleep10 pts
Body composition5 pts

Fifty points for physiology. It moves in weeks, not days. That's the point — it's the proof.

The loop

Do. Respond. Repeat.

Tonight

You get to bed on schedule.

This month

Your HRV climbs. Your resting heart rate falls.

Always

Your Index shows you it's working.

Behavior leads. Physiology follows. The Index proves it.

Why trust it

No magic.
Just science.

Every point traces to published research. And when the science moves, the Index moves with it — and tells you what changed.

Read where every point comes from

Every morning

One honest read a day.

WakeYour score.Written by your body, overnight.
ActOne focus.The single thing that moves it most today.
WatchThe response.Your Index answers in days and weeks.

The app

Free to start.
Deep when you're ready.

Free. Forever.

  • Vitality Index
  • Readiness
  • Sleep Score and Sleep Debt
  • 7-day Vitals, Sleep, and Fitness
  • 30-day Metrics history
  • Today's adaptive plan guidance
  • Experiments with compact results
  • synqIQ with a monthly allowance

Pro

  • Full Adaptive Weekly Plan
  • Vitality Forecast
  • Weekly Longevity Report
  • 90-day Long-Term Trends
  • Deep Analysis
  • Full experiment results
  • Fitness Diary month view, charts, and heatmap
  • Deep Metrics history
  • Expanded synqIQ

Pricing

The scores are free.
The depth is Pro.

Monthly $12.99/month

Cancel anytime in your App Store settings.

Start with Pro
Annual $89.99/year

About $7.50 a month, billed once a year.

Start with Pro

Prices shown in USD. App Store pricing varies by region.

Privacy

Your health data
is yours. Full stop.

Core scores compute on your iPhone.Apple Health data is read with your permission, on device.
Encrypted, always.AES-256 at rest, TLS 1.3 in transit.
No ads. No data sales.You are the customer, not the product.
Anonymized before AI sees it.synqIQ works from summaries stripped of identifiers.

The details, in plain language: Privacy Policy.

synqology

Add years to your life.
And life to your years.

Download on the App Store

Free on iPhone. Works best with Apple Watch.

Wear an Oura Ring? Your sleep syncs in through Apple Health.