Test 01
Aerobic capacity
A VO₂max estimate from a guided walk-run protocol, or taken straight from your wearable when it has one. The single best predictor of how long you live well.
Three tests. One number. Your real age.
Three field tests you can do anywhere — an aerobic capacity estimate, a dead hang and a sit-to-stand — scored against people your age and folded into a single Vital age. Retest every six weeks and watch it move.
Founder's Pass: free for the whole beta and the first year after it. 500 places, closing 15 November 2026.
AndroidWear OS · standaloneResults stay on the device
What PeakVital is
Three tests. One number. Your real age.
Three tests, one number. VO₂max, dead hang and sit-to-stand, scored against your age group, so you know where you stand before you decide what to work on.
Test 02
Dead hang
Grip endurance is one of the strongest longevity markers there is. Hang until you drop; PeakVital times it, sets the median for your age next to it and remembers your best.
Test 03
Sit to stand
Lower-body power and balance in thirty seconds, from a chair. Simple enough to do today, sensitive enough to show change in a month.
Then, one number
Age-graded scoring
Raw results mean nothing without a reference. Every test becomes a percentile against your age group and sex before it becomes a score.
Vital age and trend
The three percentiles fold into one age. The history screen shows every baseline, what moved between them, and by how much.
Features
Test, score, retest
A baseline every six weeks, kept honest by the same protocol each time. Everything below is either built or being built. Waitlist members get each piece as it ships.
- 3
tests, no lab
An aerobic capacity estimate, a timed dead hang and a 30-second sit-to-stand. A bar and a chair are the only equipment.
- 1
number you can move
Each test is a percentile for your age and sex; together they become a Vital age. The goal is to bring it under your calendar age, and the trend over time is what matters.
- 6
weeks between retests
Long enough for training to show up, short enough that you keep at it. PeakVital reminds you when a retest is due and keeps every baseline.
Guided test flow
Cues, countdowns and a live heart rate during each test so the protocol is the same every time and the numbers are comparable.
Retest when it is due
A baseline is a snapshot. PeakVital tells you when a retest is due and lines the new number up against the last one.
Private by default
Results stay on the device. No population data leaves your phone without you choosing to share it.
Screens
A look inside PeakVital
The three screens as they are designed today.
Screens shown are design renders of the app as it will ship in the beta.
How it compares
Strength and endurance, tested — not guessed.
Wearables estimate your fitness age passively from heart rate. PeakVital has you do three short tests and scores what you actually did.
| Feature | PeakVital | Garmin Fitness Age | Oura | WHOOP Age | Apple Cardio Fitness |
|---|---|---|---|---|---|
| Strength tests (grip, legs) | Yes | No | No | No | No |
| Guided aerobic field test | Yes | Lactate threshold test | 6-minute walk | No | No |
| Scored against your age group | Yes | Yes | Yes | Yes | Yes |
| Works without a specific wearable | Yes | No | No | No | No |
| Retest schedule with every baseline kept | Yes | Partial | Partial | Partial | Partial |
| iPhone app | No | Yes | Yes | Yes | Yes |
Checked against each product’s public pages and store listings in October 2026. Products change; if a cell is out of date, tell us at hello@upeak.io and we will fix it.
FAQ
PeakVital, answered
Why these three tests?
Each is a well-studied marker that predicts healthy lifespan, each needs almost no equipment, and together they cover the engine (aerobic capacity), the frame (grip and upper-body endurance) and the base (lower-body power and balance).
How accurate is the VO₂max estimate?
A guided walk-run protocol gives a reliable estimate for tracking change over time, which is what matters here. If your watch already reports VO₂max, PeakVital uses that instead. Neither replaces a lab test; both are good enough to see a trend.
What do I need?
Something to hang from, a chair, a flat route to walk or run, and about fifteen minutes. A heart-rate source improves the aerobic estimate but is optional.
Is PeakVital a medical device?
No. It is a fitness baseline, not a diagnosis. If a result worries you, talk to a doctor; PeakVital will tell you when a number is unusual enough to be worth that conversation.
When does it launch?
PeakVital is the newest app in the suite and is in design now. Joining the waitlist for it is the fastest way to get the first build.
What is the Founder's Pass?
It is how the first 500 people on the waitlist join. A founder gets every app they ticked free for the whole beta and for the first year after each one launches, founder pricing after that for as long as they stay, and an invite ahead of the general waitlist. It costs nothing and needs no card — only that you join before the round closes on 15 November 2026.
What happens when the founding round closes?
The waitlist stays open and stays free to join, but that is all it is: no free year, no locked-in price, and invites go out behind the founders. The round closes on 15 November 2026, or earlier if all 500 places are taken.
The rest of the suite
The other apps
PeakUBody · A coach that reads everything you already track.
PeakBeatTraining · Your effort writes the setlist.
PeakClothesWardrobe · One outfit a morning. No scrolling.
PeakLookAttention · Drafts the reply. Keeps the follow-up going.
PeakWatchAgents · Your coding agent, on your wrist.
PeakVoucherWallet · A wallet for the vouchers buried in your messages.
PeakFinanceHousehold · Save more, and see exactly where the household stands.From the blog
The research behind PeakVital
PeakVital · Guide
Norwegian 4x4 intervals: the workout that raises VO2 max
The Norwegian 4x4: four 4-minute intervals at 90 to 95% of max heart rate with 3-minute recoveries. What the trials…
PeakVital · Guide
How accurate is Garmin VO2 max (and Apple Watch)?
How accurate is Garmin VO2 max? What validation studies found for Garmin and Apple Watch against lab tests, why they…
PeakVital · Guide
What is a good VO2 max for men and for women, by age
What is a good VO2 max for men and for women? Lab-measured percentiles from 7,783 treadmill tests by decade, and which…
Private by default
Deterministic and secure
WCAG 2.1 AA
Every UPeak app ships with the same three commitments.
Founding round · closes 15 November 2026
Get in while
it is still free.
The suite opens one app at a time, and the first 500 people through the door open it as founders. Tell us what you are training for and that is where we will start you.
Founder's Pass
First 500 only
Free for the whole beta — and the first year after launch.
Join before 15 November 2026 and you join as a founder. After it closes the waitlist stays open, but a waitlist is all it is: no free year, no locked price, and invites go out behind the founders.
--days
--hrs
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- Every app you tick, free for the whole beta and for the first year after it launches.
- Founder pricing after that year, locked for as long as you stay.
- First in the queue: founders are invited ahead of the general waitlist, in join order.
- A direct line to the people building it — your reply goes to us, not to a helpdesk.
Your founder place is held.
We got it. Your Founder's Pass is logged against your email. When your slot opens you'll get one email with the build for the app you asked for first.