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The longevity app for iPhone

Age slower.
On purpose.

Klyft is the iPhone app that brings your recovery, sleep, nutrition and peptide protocols into one place — so you can see what's working and run each day with intent. The whole longevity picture, in one app.

7-day free trial, then $19.99/month. Cancel anytime.
Today · 6:42 am
You're well‑recovered. A good day to push.
Readiness
82
Recovery
91%
Sleep
7h 20m
Protocol
4/5
Recovery
91% · ready
Protocol
On track
Works with
Apple Health Garmin WHOOP Oura Fitbit Polar
800+ peer-reviewed studies
The shift

Longevity isn't one number.
It's the whole picture.

Sleep, recovery, training, nutrition, the protocols you run — they only mean something together. Klyft pulls them into one view each morning, and turns it into a call you can act on.

Recovery
The daily input

Longevity is built one day at a time.

Arc Score
0
SOLID
Tuesday · 19 May

You slept 7h 20m, took your protocol on time, held Zone 2 for 42 minutes, and ate within range — that's where today's ninety‑one came from.

06:42 Sleep · 7h 20m · 92% efficiency 32
07:31 Protocol · BPC‑157 + AM doses · logged on time 12
09:50 Zone 2 · Easy ride · 42 min · avg 132 bpm 24
12:14 Lunch · Salmon & greens bowl · 612 kcal 12
22:30 Wind‑down · No caffeine after 1pm · in bed 22:30 11
Wearables · Sleep · Vitals

Your wearables,
finally making sense.

Sleep is the single strongest daily lever on how you age. Klyft reads every night — stages, HRV, resting heart rate, respiration — from whatever you wear, and turns it into a clear read every morning.

Last Night's Sleep

Tuesday, May 19
11:59 PM1:59 AM4:59 AM6:27 AM
Deep Light REM Awake
7h 20m
Total sleep
84/100
Sleep score
Recovery
91%
Autonomic balance leaning parasympathetic. Ready to push today.
54 msHRV, last night
52 bpmResting HR
Vitals
14.2 br/min
Resting respiration steady. SpO₂ holding at 98%.
98%Blood oxygen
36.2°CSkin temp
Nutrition

Food is your most
frequent input.

You eat three‑plus times a day — every one a lever on your biology. Snap the plate; Klyft fills the macros, timestamps it, and folds it into your day.

9:41
Logging · AI vision
Grilled salmon 180g
Quinoa 120g
Avocado ½
Mixed greens 80g
90
Grilled Salmon Quinoa Bowl
Salmon, quinoa, avocado, eggs & greens.
Thriving
1077
Calories
73.4g
Protein
56.1g
Fat
79.6g
Carbs
Snap to log

One photo.
The whole plate.

No barcodes, no databases, no decimal points. Klyft sees the meal the way you do — and the macros land in your day before you've put the fork down.

Snap.
Open the camera in the app, or share any photo to Klyft from your phone's gallery.
Recognize.
Klyft identifies ingredients and estimates portion sizes from the visual cues.
Log.
Macros and timing land in your day automatically — and roll into tomorrow's plan.
07:12 · Breakfast
Berry & granola yogurt bowl
480kcal · P 18 · C 62 · F 16
12:14 · Lunch
Mixed greens & grain bowl
612kcal · P 42 · C 48 · F 24
15:40 · Snack
Mixed nuts & dried fruit
180kcal · P 6 · C 14 · F 12
19:30 · Dinner
Margherita pizza, wood-fired
748kcal · P 28 · C 88 · F 28
Protocols Live

Everything you take,
on protocol.

One of the pillars: what you put in your body. Peptides today — dose, timing, cycles and adherence, kept on schedule. Supplements join the same system next, so your whole stack lives in one place.

Built for how you actually run it

Precision,
not memory.

No more half-remembered doses or "did I take it this morning?" Klyft turns your protocol into something you run with intent — and can account for, down to the day.

Precise logging
Dose, route, timing and cycle for every peptide — saved as a protocol you reuse in two taps.
Reminders & honest adherence
A nudge before each window and a streak that reflects what you actually took — not what you meant to.
Cycles & clinician-ready history
Track on/off phases, get told the day you taper, and export a clean PDF of everything you've run.
Today's protocol
Tue · 4 of 5 done
100%
BPC‑157 Peptide
250 mcg · Sub‑Q · 2× · AM & PM
Done
8:04 am & logged
98%
Ipamorelin Peptide
200 mcg · Sub‑Q · 1× · PM
9:30 pm
reminder set
92%
TB‑500 Peptide
2 mg · Sub‑Q · 2×/week
Wed
next dose
88%
CJC‑1295 Peptide
100 mcg · Sub‑Q · 2×/week
Thu
next dose
94%
Cycle · Week 4 of 6 Phase
Off-cycle begins Jul 11
On track
14 days left
Klyft is a wellness tool, not medical advice. Track what you and your clinician decide — Klyft keeps it organized and on schedule.
Ask Klyft

A coach who knows
your whole routine.

Ask Klyft sees your protocol, your wearables, your sleep and your history. Ask it anything about your training, recovery or routine — and get an answer grounded in your own data, not the internet's.

Conversational

Talk to it.
It handles the rest.

Plan your cycle. Check your recovery. Ask why your deep sleep dropped. Klyft already has your data.

Knows your protocol
Every peptide, dose, cycle and timing — so it answers in the context of what you're actually running.
Reads your wearables
Sleep, HRV and recovery, pulled in from whatever you wear — no manual entry.
Answers, not data dumps
"Why am I tired?" gets a plain answer you can act on — not a chart to decode.
Should I cycle off BPC‑157 soon?
Klyft
You're on week 4 of 6. Your plan tapers in 10 days, then a 4‑week off‑cycle. Adherence has been 96% — a clean run. Want me to set the taper reminders?
Yes. And how's my recovery this week?
Klyft
Trending up. HRV averaged 58 ms vs 52 last week, resting HR is down to 51, and sleep has held at 7h 20m. Reminders are set for the taper.
This week · recovery
HRV avg
58 ms
Resting HR
51 bpm
Sleep avg
7h 20m
Adherence
96%
Ask Klyft…
On the roadmap · In development

The longevity engine
we're building.

Peptide tracking is live today. Next, Klyft connects it to the rest of your biology — so you'll see not just what you took, but what it actually changed. Here's where we're headed.

Preview · in development
Causal graph · concept
Your actionsYour metrics
How the engine will read it
observed over —
Confidence

Bloodwork, decoded

Upload any lab panel as a PDF or photo. Klyft reads 50+ biomarkers, maps them to longevity‑optimal ranges, and tracks them over time.

In development

Smart supplement stack

Track supplements right alongside your peptides — timing, doses and your whole stack in one place, never doubled up or forgotten.

In development

Biological age & pace

Turn your biomarkers and vitals into one number — how fast you're aging — and watch it bend as your habits change.

In development

Be first to the full picture.

Join early access and we'll tell you the moment bloodwork, supplements and the causal engine go live.

No spam — just one email when it's ready.
You're on the list — we'll email you when it's ready.
Deterministic at the core
Your scores come from algorithms grounded in 800+ peer‑reviewed studies. AI handles language and vision — never the numbers.
Honest about what's live
We ship, then talk about it. What's available today is marked live; what's on the roadmap is marked in development — never dressed up as more than it is.
Private by design
Encrypted in transit and at rest, and never sold. You own your health data — export or delete it whenever you choose.
A wellness tool, not medical advice
Klyft is built for healthy adults. Always consult your clinician before starting or changing any protocol.

Live longer.
Knowingly.

Download Klyft, connect the wearable you already own, and see your whole longevity picture — sleep, recovery, nutrition and the protocols you run — in one daily Arc Score.

7-day free trial, then $19.99/month. Cancel anytime.