Pulse Pair
Free forever · No subscription

Sleep, Recovery
& Strain.
Without the subscription.

Pulse Pair turns the watch or band you already wear into the daily scores people pay a monthly fee for. Fitbit Air, Pixel Watch, Apple Watch, Galaxy Watch and more. Use it on your own, free, forever.

See the scoresGot a Fitbit Air?

No partner needed. Sharing is an optional extra.

$0 forever Your signals, your way Works with Fitbit Air
7:12●●● ▮
Good morning, Alex
Today
Synced 7:12 am
88%
Sleep
82%
Recovery
12.4High
Strain
Your body is ready for a harder day. Suggested strain 13–17.
Last night
Time asleep
7h 42m
10:48 pm – 6:41 am · need 8h 45m
88%
Deep1h 24m
REM1h 51m
Light4h 27m
Awake18m
HomeSleepTogetherHealth

No subscription. Ever.

Sleep, Recovery & Strain.
Free. Forever.

Other apps charge every month for scores like these. In Pulse Pair your daily Sleep, Recovery and Strain scores, trends and cycle tracking cost nothing. Not now, not after a trial, not ever.

No subscriptionNo adsYour data is never soldNo extra hardware

Sleep

Know how well you actually slept.

Not just hours in bed. Pulse Pair scores your night against what your body needed, including yesterday's strain and any sleep debt.

  • Sleep performance and sleep need
  • Deep, REM, light and awake time
  • Bedtime consistency and efficiency
88%Performance
Last night
7h 42mNeed 8h 45m · 18 min awake
Deep 1h 24mREM 1h 51mLight 4h 27mAwake 18m
Bedtime10:48pm
Woke6:41am
Efficiency93%

Recovery

Push hard or take it easy? Ask your body.

Every morning your heart rate variability, resting heart rate and breathing rate are compared with your own 30-day baseline to show how ready you are.

  • A single 0–100% readiness score
  • HRV, resting heart rate, respiratory rate
  • Blood oxygen and skin temperature when your watch has them
82%Recovered
Today
Ready to goHRV 6 ms above your baseline
HRV68ms
Resting HR52bpm
Breathing14.2/min
FriSatSunMonTueWedThu

Strain

See how hard your day really was.

Strain adds up the load on your heart from workouts, walks and everything in between, so you can balance effort with recovery.

  • Day strain from heart rate and activity
  • Steps, active minutes and active energy
  • Hour-by-hour effort
12.4Day strain
Today so far
ModerateMorning run · 32 min
Steps9,840
Active46min
Energy612kcal
6a7a8a10a12p2p4p6p8p10p
Alex · Apple Watch
7:12●●● ▮
Good morning, Alex
Today
Synced 7:12 am
88%
Sleep
82%
Recovery
12.4High
Strain
Your body is ready for a harder day. Suggested strain 13–17.
Last night
Time asleep
7h 42m
10:48 pm – 6:41 am · need 8h 45m
88%
Deep1h 24m
REM1h 51m
Light4h 27m
Awake18m
HomeSleepTogetherHealth
7:14●●● ▮
Good morning, Jess
Today
Synced 7:14 am
93%
Sleep
64%
Recovery
8.1Moderate
Strain
You're holding steady. Moderate effort suits today. Suggested strain 8–13.
Cycle · day 19Period in 9 days
Last night
Time asleep
8h 05m
10:31 pm – 6:52 am · need 8h 20m
93%
Deep1h 31m
REM2h 02m
Light4h 32m
Awake16m
HomeSleepCycleTogetherHealth
Jess · Pixel Watch
9:41●●● ▮

Invite Jess

Share this code, or send a link. Jess enters it in Pulse Pair to connect.

P4K9Q2
Send invite link

Friends: Sam, Priya and 1 more

Sharing withJess
Sleep
Recovery
Activity & strain
Period countdown
Fertile window

🔒 Symptoms, notes and intimacy entries are never shared.

ThursdayTogether
JessPartner · up at 6:58
Sleep8h 05m
Recovery64%
Period9 days
SamFriend · 10k run yesterday
Recovery91%
Strain15.2
👏 You cheered Sam
PriyaFriend
Sleep6h 10m
Recovery47%
1

Connect in seconds.

Send your partner a code or link. Add friends the same way: a training buddy, your sister, your running club. Nothing is shared until you both say yes.

2

You choose what they see.

Pick each category for each person: sleep, recovery, activity, period countdown, fertile window. Turn any of them off whenever you like. Private logs stay private, always.

3

See each other, every morning.

Priya had a rough night? Bring her a coffee. Sam smashed a 10k? Send a cheer. One glance shows how the people you care about are really doing.

Cycle tracking

Periods, symptoms and what they mean for your day.

Log your period in a tap and Pulse Pair predicts the next one and your fertile window, then shows how your cycle shapes your recovery and sleep. Share a simple countdown with your partner, if you want to.

  • Period and fertile window predictions
  • Symptom, mood and note logging
  • Skin temperature trends from your watch
Day19Period in 9 days
1234567 891011121314 15161718192021
PeriodFertile window
Mild crampsEnergisedGood sleep

Cycle predictions are estimates and must not be used as contraception.

Recovery signalsEdit
Heart rate variability68ms▲ 6 ms vs 7-day avg
Resting heart rate52bpm▼ 2 bpm vs 7-day avg
Blood oxygen97%In your usual range
Add a signal
Respiratory rateSkin temperatureVO₂ maxSleeping HRStepsTime asleep

Signal widgets

See only what matters to you.

Training for a race? Put HRV and resting heart rate up top. Watching your sleep? Lead with time asleep and sleeping heart rate. Add, remove and reorder signal widgets on your Home screen, and hide everything else.

  • HRV, resting HR, respiratory rate, blood oxygen
  • Skin temperature, VO₂ max, sleeping HR, steps
  • Each with a 7-day trend against your own baseline

Made for Fitbit Air

Your Fitbit Air already measures it. Pulse Pair explains it.

Connect your Google account once and Pulse Pair reads your Fitbit Air or Pixel Watch data through Google Health. Every morning you get a clear recovery score, a strain target for the day and a sleep score measured against what your body actually needed.

  • No Premium subscription, no paywalled insights
  • Read-only access: we never change your Google data
  • Disconnect any time in one tap
Pulse PairSubscription apps
Daily recovery score
Day strain and target
Sleep performance vs need
HRV and resting HR trends
Monthly cost$0Every month

Works with what you wear

No new gadget needed.

Pulse Pair reads your data with your permission and never writes to or changes your health records.

Apple Health

Apple Watch, Oura, Garmin and anything else that writes to Health on iPhone.

Health Connect

Samsung Galaxy Watch and other Android wearables and apps.

Google Health

Fitbit Air, Fitbit and Pixel Watch, connected with your Google account (read-only).

Pricing

Free on your own. Forever.

Every score, every signal and cycle tracking are free with no time limit. You only pay if you want to share with other people, and even then it is a single one-off purchase.

Pulse Pair

Everything for you, on your own

$0forever
  • Daily Sleep, Recovery and Strain scores
  • Customisable signal widgets
  • Sleep stages, HRV, resting heart rate and trends
  • Cycle tracking and predictions
  • Apple Health, Health Connect and Google Health
  • No ads, no subscription, data never sold
See the scores
14 days free

Pulse Pair +

Optional: share with your partner and friends

$4.99one-time
  • Everything in Pulse Pair
  • Connect with your partner and friends
  • Choose what each person sees
  • One Pulse Pair + purchase opens a connection for both of you, even if only one of you buys it
  • Try it free for 14 days. No charge unless you buy
How sharing works

Price in USD. Local prices are set by the App Store and Google Play.

Questions

Do I need a partner to use it?

No. Most people use Pulse Pair on their own. Every score, signal and chart works for one person and is free forever. Sharing is there if you want it later.

Is it really free forever?

Yes. Sleep, Recovery and Strain scores, trends and cycle tracking are free with no time limit and no subscription. The only paid part is Pulse Pair +, a single one-off purchase to share with other people.

Which watches work?

Fitbit Air, Fitbit and Pixel Watch through Google Health, plus anything that writes to Apple Health on iPhone or Health Connect on Android. The more your device measures overnight (heart rate variability, resting heart rate), the better your Recovery score.

Who can see my data?

Only you, unless you connect with someone and turn categories on for them. Symptoms, notes and intimacy entries are never shared. We never sell your data or use it for advertising. Read the Privacy Policy.

Is Pulse Pair medical advice?

No. Pulse Pair is a general wellness app, not a medical device. Talk to a qualified professional about medical concerns.

Who made this app?

Not a big company.
One guy, for his wife.

Pulse Pair wasn't built by a tech giant or a team of fifty. It was built by one person, YouTuber @thesamuelnam, who spent months making it on his own, for just two people: him and his wife.

He wanted to know when she'd had a rough night or a tough point in her cycle before the day even started, so he could be better prepared and actually help. Now every couple can have the same.

Watch @thesamuelnam on YouTube