70 BPM · Free heart rate app for iPhone
Find out which meeting made your heart race.
70 BPM lays your Apple Watch heart rate over your calendar, so every spike has a name: the 9 AM standup, the client call, the commute home. See what drains you, what calms you, and plan your day around it.
Free · Reads from Apple Health · Stays on your iPhone, no cloud upload
Screenshots
Visuals from the official App Store listing.
Works with any device that writes heart rate to Apple Health
70 BPM does not measure heart rate. It reads what is already in Apple Health — so the question is what your watch writes there. 70 BPM shows every heart-rate sample in Apple Health, whichever device wrote it — the differences below are about what each device sends, not what 70 BPM reads.
Full-day heart rate (best experience): Apple Watch, Garmin, Oura. All three write samples across the whole day, so the calendar chart fills in.
Syncs heart rate; coverage varies: Fitbit / Google Health, COROS, Withings and Amazfit write heart rate to Apple Health, but full-day coverage is not documented by the maker — check your own Health app. Polar and Whoop sync workout heart rate only, so the chart stays empty between sessions.
Not supported: Google Pixel Watch and Galaxy Watch4 or newer cannot pair with an iPhone at all.
Which smartwatches work with Apple Health — checked against each maker’s documentation ›
How it works
Three steps from install to results with 70 BPM.
- 1
Connect Health
Grant Apple Health access so 70 BPM can read heart-rate samples from Apple Watch and other sources.
- 2
Open your day
Scrub the day chart, zoom into meetings and focus blocks, and see low, normal, and high zones in context.
- 3
Act on patterns
Spot which parts of your schedule stress or calm you—and plan recovery with calendar-aware insights.
What 70 BPM does
Current as of version 1.2.
- Calendar-aware heart rate. BPM matched against what was actually on your schedule — meetings, focus blocks and events.
- A day chart built for scanning. Zones, dense or sparse detail, bars or line.
- Event focus. Open a meeting or block and see the samples that fell inside it.
- Focused Tracking. Denser sampling during important timed events, using an iPhone workout session. Data still arrives through Apple Health.
- Home Screen and Lock Screen widgets. A Home Screen widget for your current app icon, and a Lock Screen widget showing today’s average heart rate.
- Siri and VoiceOver. Added in version 1.2 — Siri can access the app, and the interface supports VoiceOver.
- Six languages. English, Spanish, French, German, Hindi and Japanese.
- On-device by design. Processing stays on your iPhone; 70 BPM does not upload your heart rate to a cloud.
70 BPM reads heart-rate samples that another device — usually an Apple Watch — has already written to Apple Health. It does not measure heart rate itself, and it is not a medical device.
Does 70 BPM share my health data?
What the app asks for, what stays on your iPhone, and how to check that for yourself.
A heart rate app with no cloud upload
70 BPM’s App Store listing states it directly: on-device by design — processing stays on your iPhone, and 70 BPM doesn’t upload your heart rate to a cloud. There is no web dashboard to sign into and no companion site showing your numbers, because the chart is drawn on the device that already holds the data.
That is a design decision with a real cost attached. Cross-device sync, a browser view of your history and server-side backup are the things you give up when nothing is uploaded. Apps that offer those features need a server to offer them. 70 BPM does not offer them, which is why it does not need one.
On-device processing: how it works
Heart-rate samples on an iPhone already live in Apple Health, stored locally and included in your encrypted device backup. 70 BPM reads those existing samples and matches them against events it reads from your calendar. Both sources are already on the phone, so the overlay is assembled there too — the work is a local query and a chart, not an upload and a response.
Apple’s rules add a floor beneath this: apps may not use HealthKit data for advertising or sell it to data brokers, and any app touching HealthKit must publish a privacy policy. That floor applies to every health app on the App Store, so it is worth treating as a baseline rather than a distinguishing feature.
What 70 BPM asks for, and why
Health permissions on iOS are granted per data type and can be withdrawn at any time in Settings › Privacy & Security › Health, without uninstalling anything.
| Permission | Access | What it is for |
|---|---|---|
| Apple Health — heart rate | Read | The samples the day chart is drawn from. |
| Apple Health — workouts | Write | Only when you use Focused Tracking, which starts an iPhone workout session so samples are recorded more densely during an event. |
| Calendar | Full access | Reading the events that heart-rate samples are lined up against. You choose which calendars count — holiday and subscribed calendars start off. |
70 BPM writes to Apple Health as well as reading from it. That write is the Focused Tracking workout session and nothing else, and it stays inside Health on your device.
How to check any health app yourself
You do not have to take a privacy claim on trust. Put the phone in airplane mode and use the app normally: anything that still works cannot be reaching a server. Then read the App Store listing’s own privacy card, which Apple requires the developer to fill in, and compare it against what the app appears to do offline. The full method is in Heart Rate App That Does Not Upload to the Cloud.
Guides
SEO guides for real search intent — each answers a question and shows how 70 BPM helps.
Heart Rate Statistics: What BPM Data Reveals About Your Day
Resting ranges, what standing, speaking and stress add, exercise bands by age, and published Apple Watch accuracy figures — every number linked to the guideline or paper it came from, so it can be checked and quoted.
Read guide › smartwatches that work with apple healthWhich Smartwatches Work With Apple Health (and 70 BPM)
70 BPM reads whatever writes heart rate into Apple Health — but only some watches cover the whole day. Garmin, Oura, Whoop, Polar, Fitbit, COROS, Withings, Amazfit, Samsung and Pixel Watch, sorted by what each actually syncs, from the makers’ own documentation.
Read guide › heart rate during sleepHeart Rate During Sleep: What Normal Looks Like and What Raises It
Your heart rate drops while you sleep, and the size of that drop against your own baseline says more than the number. What the overnight curve normally looks like, and what commonly pushes it up — alcohol, late meals, heat, illness.
Read guide › heart rate zones appHeart Rate Zones App: Best Options for iPhone and Apple Watch (2026)
Zone training needs an app that reads your workouts and reports time in each band. Zones for Training, Zone 2, HeartWatch and Heart Analyzer compared — plus an honest note that 70 BPM is not a zone-training app and which to use instead.
Read guide › welltory alternativeWelltory Alternatives for iPhone: Six Options, by What You Actually Want
Elite HRV, Athlytic, HeartWatch, HRV4Training, StressFace and 70 BPM, sorted by the reason you are leaving Welltory: the subscription, the learning curve, or wanting the meeting named instead of inferred.
Read guide › heart rate variability appHeart Rate Variability App: The Best HRV Apps for iPhone in 2026
HRV apps differ less in what they measure than in how much interpretation they hand you. Passive versus active measurement explained, Welltory, Elite HRV, Athlytic and HRV4Training compared, and why one morning score means less than it appears to.
Read guide › welltory app reviewWelltory App Review: What It Gets Right and Where It Falls Short (2026)
Welltory is the most established HRV app on iOS at 4.7 stars from over 132,000 ratings. What it genuinely gets right, where the subscription and learning curve bite, and who is better served by something narrower.
Read guide › best heart rate analysis apps for apple healthBest Heart Rate Analysis Apps for Apple Health Users (2026)
Apple Health stores your heart rate well and interprets it barely. Welltory, Athlytic, Elite HRV, HRV4Training and 70 BPM compared on what each actually does with Health data, what it costs, and where each one stops.
Read guide › best apps to track heart rate with calendar contextBest Apps to Track Heart Rate with Calendar Context (2026)
Very few apps actually read your calendar. What calendar context means in practice, which apps genuinely do it versus only infer it from patterns, and an honest comparison of 70 BPM, Lifestack, Welltory and Athlytic — including which does not belong.
Read guide › heart rate and calendar contextWhat Your Heart Rate Looks Like Next to Your Calendar
A build note. A resting heart rate number on its own says almost nothing; lining the same data up against calendar events changed how we read it, and became the whole app. What showed up in the first week, and why it stays on the device.
Read post › best heart rate app for iphoneBest Heart Rate App for iPhone (2026): Five Picks, Compared
Heart Analyzer, HeartWatch, Welltory, Zones for Training and 70 BPM compared, after a quick guide to the four kinds of heart rate app. Which are free, which need a subscription, and which fits the question you are asking.
Read guide › best apple watch heart rate calendar appBest Apple Watch Heart Rate + Calendar App
What this category is genuinely for, what separates a useful app from a chart with extra colours, and the exact point at which Apple Health itself stops being enough. For people who already have the data and want the context around it.
Read guide › heart rate calendar app iphoneHeart Rate Calendar App for iPhone — See BPM by Meeting
Pairing heart rate with calendar events works, but the reasoning traps are easy to fall into. What the data genuinely supports, what it does not, and how to use the pairing without drawing conclusions it cannot carry.
Read guide › apple watch heart rate calendarHow to View Apple Watch Heart Rate Alongside Your Calendar
Heart rate recorded by an Apple Watch reaches other apps through Apple Health, not directly. How that hand-off works, which permissions it needs, and why your chart can look empty or patchy even when the Watch is recording perfectly well.
Read guide › heart rate during meetings appTrack Stress Across Meetings with Heart Rate Data
The pattern worth looking for is repetition, not one elevated reading. How to rule out the boring explanations first, why four weeks of observation beats a single bad afternoon, and what to actually do once a recurring slot keeps showing up.
Read guide › apple health heart rate day viewBest Apple Health Heart Rate Day View for Busy Schedules
A day view is only as honest as the sampling behind it. How Apple Watch actually collects heart rate through the day, how to read the shape of the trace rather than chase the peaks, and what commonly moves the line that has nothing to do with stress.
Read guide › heart rate app without cloud uploadHeart Rate App That Does Not Upload to the Cloud
Heart-rate data reveals more than a number. What on-device processing means as an actual architecture rather than a marketing line, and how to check any health app’s real data practices before you grant it access to Apple Health.
Read guide › cardiogram alternativeCardiogram Alternative for iPhone (2026)
Cardiogram is no longer on the App Store. What happened to it, why your heart-rate history is almost certainly still intact in Apple Health, what to check before migrating anywhere, and where 70 BPM does and does not replace it.
Read guide ›FAQ
Answers people search for before they download.
Does 70 BPM upload my heart rate to the cloud?
Its App Store listing states that 70 BPM is on-device by design, that processing stays on your iPhone, and that it does not upload your heart rate to a cloud. There is no web dashboard and no account to sign into, so there is nothing on a server to sign into. You can verify the behaviour yourself by using the app in airplane mode.
What permissions does 70 BPM ask for?
Three. It reads heart rate from Apple Health, writes a workout session to Apple Health only when you use Focused Tracking, and reads your calendar so events can be lined up against samples. You choose which calendars count, and holiday and subscribed calendars start off. Health permissions can be withdrawn at any time in Settings.
What is 70 BPM?
70 BPM is a heart rate monitor app for iOS by KIDA Studios that overlays your heart-rate data from Apple Health onto your calendar so you can see BPM in the context of real meetings and events.
Does 70 BPM need an Apple Watch?
Apple Watch is the most common source for continuous heart-rate samples, but 70 BPM reads from Apple Health—so any devices that write heart rate to Health can contribute.
Is 70 BPM free?
Yes. 70 BPM is free to download on the App Store. Check the listing for the latest details.
What platforms does 70 BPM support?
70 BPM runs on iPhone, and needs iOS 18 or later. It does not have an Apple Watch app — heart-rate data typically comes from an Apple Watch, but it reaches 70 BPM through Apple Health on your device.
How to view Apple Watch heart rate alongside your calendar ›
Why pair heart rate with calendar?
A single BPM number lacks context. Seeing heart rate next to meetings and focus blocks shows how your schedule actually affects you.
Does 70 BPM have a widget?
Yes. There is a Home Screen widget for your current app icon, and a Lock Screen widget that shows today’s average heart rate.
What languages does 70 BPM support?
Six: English, Spanish, French, German, Hindi and Japanese. Spanish, French, German and Hindi were added in version 1.2.
Does 70 BPM work with Siri and VoiceOver?
Yes. Version 1.2 added Siri access to the app and VoiceOver accessibility support.
Get 70 BPM today
Heart Rate Meets Calendar — built by KIDA Studios.