8 Go for it
Good to push today
2 since yesterday
HRV 18% above your usual; sleeping HR 3 under your usual.
Your session is on: Tempo intervals, 11 km.
Sleep Raising score 84
Vitals Raising favorable
Activity Neutral Optimal
New Keho Polar Sync
Everything your Polar records, in Apple Health
Sleep stages, 24/7 heart rate, SpO2, breathing and temperature, plus Nightly Recharge kept for good. Connect once; Keho does the rest on your iPhone.
Choose your movement
Polar and Apple Health
Polar Flow sends the basics. Keho sends the rest.
Your Polar measures far more than Polar Flow passes on to Apple Health. Keho Polar Sync fills the gap, so every app that reads Health, Keho included, sees your whole night and day.
Polar Flow’s own Apple Health connection writes workouts, steps, active and resting energy and sleep times. Sleep stages, round-the-clock heart rate and the overnight measurements your watch takes stay in Polar Flow. Keho Polar Sync reads them from your Polar account and writes each one to Apple Health with a stable identifier, so running the sync again never creates a duplicate and data from Polar Flow itself is never touched.
It works with any device that syncs to a Polar account, including the Vantage, Pacer, Grit X and Ignite families, Verity Sense and the H10 and H9 straps. The sync runs in the background overnight and whenever you open Keho. Polar Sync starts with a free month, then costs $4.99 a year or $7.99 once, and everything already synced stays yours if you stop.
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Sleep stages
Deep, core and REM sleep from your Polar, written to Apple Health night by night, with naps beside the night.
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24/7 heart rate
Continuous heart rate, not only during workouts, so resting heart rate and trends use all of your data.
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Overnight vitals
Breathing rate, SpO2 and skin temperature, each with your usual range in Keho.
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Nightly Recharge, kept
Nightly Recharge, ANS charge, sleep score and cardio load stay on your iPhone long after Polar’s 28-day API window.
Set up in three steps
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Connect your Polar account
In Keho, sign in to Polar once through Polar’s official API. No pairing, nothing to install on the watch.
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Allow Apple Health
Choose which data Keho may write to Apple Health. You can change it any time in the Health app.
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Bring your history
Optional: import your Polar data export to add years of workouts, nights and Nightly Recharge in one go.
Meet Keho
Your next best move, made clear.
See how you’re recovering, how your training is landing, and what to do next. All in one calm, focused place.
Home
Tempo intervals 11 km
Last night
Sleep
7:42 h
Sleep score
84 of 100
HRV
78ms
overnight · SDNNResting HR
45bpm
last 14 daysActivity
Today
8,214 steps · 5.9 km
Active 1:12 h
Active kcal 486
Total kcal 2,140
Floors 9
Active time and calories from Apple Health: exercise minutes, active burn and your resting burn combined.
Heart rate · 43–124 bpm · avg 66
Your heart rate across the whole day, from every source that recorded it. Dips are rest, spikes are effort or stress. Scrub to read any moment.
- Move 486 / 600 kcal · 81%
- Exercise 38 / 30 min · 127%
- Stand 10 / 12 hr · 83%
Training
Workouts Progress Stats
All sports Run Ride Swim
List Cards Week Month
RunOct 28, 6:55 AM8.2 km6:13 /km · 0:51 h
RunIntervalsOct 27, 6:40 AM9.4 km5:25 /km · 0:51 h
RunLong runOct 25, 8:10 AM18.5 km6:03 /km · 1:52 h
RunOct 24, 8:30 AM7.6 km6:11 /km · 0:47 h
SwimOct 23, 6:15 PM2.1 km2:00 /100m · 0:42 h
RunTempoOct 22, 6:50 AM10 km5:12 /km · 0:52 h
RunIntervalsOct 20, 6:45 AM9 km5:26 /km · 0:49 h
RideOct 19, 5:30 PM31.8 km29.4 km/h · 1:05 h
Sleep
7:42 h 10:58 PM – 7:04 AM in bed
84 score of 100
Deep 1:12 h
Core 4:18 h
REM 2:12 h
Awake 0:24 h
The night’s stages in order: deep restores the body, REM the mind, and brief wakes between cycles are normal. Tap through for the full night.
- Sleep duration usual 6:50–8:05 h 7:42 h
- Resting heart rate usual 43–49 bpm 45 bpm
- Min HR asleep usual 40–46 bpm 41 bpm
- HRV (SDNN) usual 48–76 ms · above usual 78 ms
- Respiratory rate usual 13.1–15.0 br/min 13.8 br/min
- Blood oxygen usual 95–98 % 97 %
Coach
Today Week Plan
Thursday, October 29 Readiness 8 · Go for it
Tempo intervals 11 km
- Heart rate 160–171 bpm
- Pace 4:45–4:57 /km
- Estimated time about 1 h 1 min
- Distance 11 km
Sustained work at threshold raises the pace you can hold for an hour.
Send to Apple Watch
Mo Tu We Th Fr Sa Su
Easy / hard 85 / 15
- Readiness, 0 to 10 One number every morning, measured against your own baselines.
- The why, in plain words The signals that moved it, and by how much.
- One clear next step What today is for, down to the session your plan has ready.
- Sleep, vitals, activity See what pushed today’s score up, and what held it back.
- Your whole day, counted Steps, distance and floors, straight from Apple Health.
- Active time and energy Exercise minutes and calories, resting burn included.
- Heart rate, around the clock Every source on one timeline: rest, effort and everything between.
- Any day, one tap away Step back through your history, or jump straight to a date.
- Log, progress, stats Your sessions, your trends and your records, one swipe apart.
- Every sport, one log Runs, rides and swims from any watch that writes to Apple Health.
- List, cards, week or month Read your training the way you think about it.
- Knows what each session was Intervals, tempo or long run, read from the workout itself.
- Time asleep, not time in bed Wake-ups are left out, so the number means what it says.
- A score for every night Polar’s when you have one, Keho’s own when your watch doesn’t.
- Deep, core and REM How the night divided up, stage by stage.
- Vitals against your normal Heart rate, HRV, breathing and oxygen, each beside your usual range.
- Today’s session, from your plan Paces and heart rate from your own runs, not a template.
- Shaped by this morning Your readiness decides whether the session holds or eases off.
- Step by step on your wrist Send the session to Apple Watch in one tap.
- Life happens Unwell, a niggle or travelling: the plan pulls back for as long as you say.
Real screens with sample data. Tap the tabs on the phone to look around.
Made for real life
Everything that matters. In one place.
From how you feel this morning to how far you’ve come, Keho makes the picture clear.
8 Go for it
Good to push today
2 since yesterday
HRV 18% above your usual; sleeping HR 3 under your usual.
A good day for intervals or a long effort.
Sleep Raising score 84
Vitals Raising favorable
Activity Neutral Optimal
Each past day shows the score you woke up with; today’s updates as you train.
Fitness 57
Fatigue 74
Form -10
Fitness is your training load’s 42-day average, fatigue the 7-day; form is the balance you carried into today. Positive means fresh, around −10 to −30 means productively building. Estimated from each workout’s duration and heart rate (Banister TRIMP) across every source, all sports.
RunOct 28, 6:55 AM8.2 km6:13 /km · 0:51 h
RunIntervalsOct 27, 6:40 AM9.4 km5:25 /km · 0:51 h
Today
8,214 steps · 5.9 km
Active 1:12 h
Active kcal 486
Total kcal 2,140
Floors 9
Active time and calories from Apple Health: exercise minutes, active burn and your resting burn combined.
- Move 486 / 600 kcal · 81%
- Exercise 38 / 30 min · 127%
- Stand 10 / 12 hr · 83%
7:42 h 10:58 PM – 7:04 AM in bed
84 score of 100
Deep 1:12 h
Core 4:18 h
REM 2:12 h
Awake 0:24 h
The night’s stages in order: deep restores the body, REM the mind, and brief wakes between cycles are normal. Tap through for the full night.
- Sleep duration usual 6:50–8:05 h 7:42 h
- Resting heart rate usual 43–49 bpm 45 bpm
- Min HR asleep usual 40–46 bpm 41 bpm
Thursday, October 29
7:04
Readiness 8 · Go for it7:04 AM
Good to push today
HRV 18% above your usual; sleeping HR 3 under your usual. Your session is on: Tempo intervals, 11 km.
Readiness
8 Go for it
Good to push today
Your session is on: Tempo intervals, 11 km.
Tempo intervals
Readiness
Good to push today
HRV 18% above your usual; sleeping HR 3 under your usual.
Tempo intervals · 11 km
Integrations
Bring your health story together.
Your watch already knows a lot. Keho brings it together, makes it meaningful, and keeps it on your iPhone.
Apple Health.
Your foundation.
You choose what to share. Keho turns those signals into guidance that feels personal from day one.
- Sleep stages NIGHT
- 24/7 heart rate BPM
- HRV (RMSSD) MS
- Breathing rate BR/MIN
- Blood oxygen SPO2
Bring more from Polar
into your day.
More of the data behind your recovery arrives in Apple Health, so Keho can give you a fuller picture each morning.
Polar Flow → Apple Health
- Sleep stages: deep, core, REM
- 24/7 heart rate, not just workouts
- Breathing, SpO2 and temperature
- Sleep score · Nightly Recharge · cardio load
- Every workout in full: route, laps and HR streams
- Your full history, from a Polar data export
Your devices.
One clear picture.
Polar and Strava connect directly. Apple Health brings in the rest. Wherever your data comes from, Keho helps you make more of it.
- Apple Watch
- Polar
- Strava
- Garmin
- Suunto
- COROS
Recovery, understood
Recovery is how you come back stronger.
Wake up with a clearer sense of what your body needs. Keho turns the night into guidance you can trust.
- Sleep in context, so one night never tells the whole story.
- Overnight signals, so you can notice when your body needs more care.
- Progress with room for rest. Because recovery is part of showing up.
7:42 h 10:58 PM – 7:04 AM in bed
84 score of 100
Deep 1:12 h
Core 4:18 h
REM 2:12 h
Awake 0:24 h
The night’s stages in order: deep restores the body, REM the mind, and brief wakes between cycles are normal. Tap through for the full night.
Each bar is one night against your goal: short nights dip below the line, extra sleep banks above it. Nights without data are left out, never counted as debt. A little debt is normal. It settles with a few ordinary nights.
Regularity
Bedtime 11:04 PM ± 0:28 h
Wake 7:02 AM ± 0:21 h
Typical times over the visible range; ± is the night-to-night variation.
Keho Coach
A personal coach that listens to your body.
Keho Coach builds your running plan around your race or your first 5K, puts each run on your Apple Watch, and offers easier options when sleep, HRV or training load say so. You decide.
Your week, shaped around you Daily guidance and a plan that flexes with your recovery
Tuesday, Oct 27 Hill repeats 8 km · 9 × 250 m
Wednesday, Oct 28 Easy run 6 km
Thursday, Oct 29 Tempo intervals 11 km · 3 × 2 km Today
Friday, Oct 30 Rest A day off. Recovery is where the training lands.
Readiness has read protect on 3 of the last 5 mornings. A gentler day now protects the week. Oct 22 · accepted
You moved a session. Oct 15 · applied
Your morning guidance One clear next step, built around what’s normal for you
Readiness 8 · Go for it7:04 AM
Good to push today
HRV 18% above your usual; sleeping HR 3 under your usual. Your session is on: Tempo intervals, 11 km.
8 Go for it
Good to push today
2 since yesterday
HRV 18% above your usual; sleeping HR 3 under your usual.
Your session is on: Tempo intervals, 11 km.
Sleep Raising score 84
Vitals Raising favorable
Activity Neutral Optimal
A quiet heads-up, before you feel it Notice meaningful changes in your overnight signals early
Overnight vitals6:52 AM
2 of your vitals were outside their usual range last night (resting HR, breathing rate). Often just a late meal, alcohol, a hard day or the start of a cold. See how you feel.
- Sleep duration usual 6:50–8:05 h 7:05 h
- Resting heart rate usual 43–49 bpm · above usual 53 bpm
- Min HR asleep usual 40–46 bpm 45 bpm
- HRV (SDNN) usual 48–76 ms 52 ms
- Respiratory rate usual 13.1–15.0 br/min · above usual 16.4 br/min
- Blood oxygen usual 95–98 % 96 %
Your week, made meaningful See the work, the recovery, and the momentum taking shape
71 Load balance 5/7 days in the band
86 Sleep 6/7 nights
78 Body vs your 60-day baseline
Sessions 5
Time 5:42 h
Distance 42.3 km
Climbing 320 m
Energy 2,140 kcal
↑ 12% vs your typical week (5:05 h over the last 4 weeks)
Privacy, built in
Your body is personal. Your data should be too.
Keho makes sense of your health data on your iPhone, not ours. You get the guidance you came for, without giving up what’s personal.
- No account required. Start with your data, not another profile. There’s no Keho account to create.
- Built for your iPhone. Your insights are created on the phone in your hand, where they belong.
- You stay in control. Choose what Keho can use in Apple Health. Change your mind whenever you want.
- Private by design. Your health data is not sent to Keho. There’s no health-data cloud to protect.
Good to know
A few things before you begin.
Everything you need to feel good about getting started. Still have a question? We’re here.
Talk to usWhat does Keho add to what Polar Flow already sends to Apple Health?
Polar Flow writes workouts, steps, energy and sleep times to Apple Health. Keho Polar Sync adds what it leaves out: sleep stages, 24/7 heart rate, breathing rate, SpO2 and skin temperature, and keeps Polar-only numbers such as Nightly Recharge, sleep score and cardio load on your iPhone for the long run.
Does Polar Sync replace the Polar Flow app?
No. Keep Polar Flow for syncing your watch and its own views. Keho connects to your Polar account through Polar’s official API, reads what your watch has synced and writes it to Apple Health without duplicates.
Which Polar devices work?
Any device that syncs to a Polar account, including the Vantage, Pacer, Grit X, and Ignite families, Verity Sense, and H10 and H9 straps. Connect once through Polar’s official API. No pairing required.
Does my health data leave my phone?
No. Keho processes readiness and statistics on your iPhone. Your health data stays in Apple Health and local app storage; there is no Keho account or server holding your biometrics.
Will Keho import my old history?
Yes. Export your Polar history and Keho can bring in years of workouts, sleep, heart rate, routes, and more. The import runs entirely on your iPhone as part of Polar Sync.
How is this different from WHOOP or Oura?
Keho works with the devices you already use and keeps your health data on your phone. It gives you personal guidance and long-term perspective without asking you to buy another wearable.
Do I have to take out a subscription?
No. Core statistics are free forever. Keho Coach unlocks every running plan with a yearly subscription, and single plans can be bought one at a time. Polar Sync includes a free month, then offers a yearly plan or a one-time purchase. Prices are shown clearly in the app before you buy.
How does the sync keep running?
Connect once and Keho works quietly in the background when iOS allows, overnight and whenever you open the app. It is designed to keep Apple Health up to date without duplicate entries.
Is there an Android version?
Not today. Keho is built around Apple Health and on-device processing, so it is available for iPhone only.
Is the coaching medical advice?
No. Keho offers personal guidance from your own data. It is not a medical device or a replacement for clinical advice, and it stays quiet when there is not enough data to be confident.
Keep reading
- Polar Flow and Apple Health: what syncs, and what doesn’t The exact list of what Polar Flow writes to Apple Health, what it leaves out, and how to get the rest.
- Export your Polar Flow data and keep your full history Download your whole Polar account, and keep Nightly Recharge and sleep history longer than 28 days.
- How to see your sleep stages on iPhone See Core, Deep and REM sleep in Health, and get stages from a watch that doesn’t send them.
Start today
Train with confidence. Starting tomorrow morning.
Download Keho, connect your watch, and wake up knowing what your body needs next. It’s personal, private, and ready when you are.
iPhone · iOS 18 or later · works with Apple Watch, Polar and the Apple Health data you choose to share
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keho. Your personal coach, on iPhone
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