Heart Analyzer generates your heart rate charts from data stored in the Apple Health App.

If readings or trends are missing, please review the Health App. Starting with iOS 27 apps can have restricted access to Health data including limiting only the most recent 30 days. To get the most out of Heart Analyzer enable access to all historical Health data.

You can update your Health permission preferences anytime in iPhone Settings -> Privacy & Security -> Health -> Heart Analyzer

1. Is the app on your watch? Complications are only offered once Heart Analyzer is installed on the Apple Watch itself and has been opened at least once on your wrist. Check the Apple Watch app on iPhone → My Watch → Heart Analyzer.

2. Dashes instead of a value usually means the complication hasn't been given data yet. Open Heart Analyzer on your wrist once, then give it a few minutes.

3. "Complication Not Available" is a watchOS bug rather than something in the app. Remove the complication, then add it again by editing the watch face directly on your wrist — editing through the Apple Watch app on iPhone is where this most often sticks. If it persists, duplicate the watch face, add the complications to the copy and delete the original. Still stuck? Email Simon@HelixApps.co.uk with your watch model and watchOS version.

Yes! Currently Heart Analyzer supports English, German, French, Spanish, Japanese and Chinese Simplified & Traditional languages. We do hope to add more language localizations to the app in the future.

You can absolutely use other heart rate monitor devices instead of or as well as Apple Watch as long as they support saving data to Apple Health. This feature is available on many third party devices from Garmin, Polar etc... if configured in the relevant app for the device.

Only Apple Watch Series 6 & newer can record Blood Oxygen Saturation. The Apple Watch SE Series does not support these readings.

Heart Analyzer does support Blood Oxygen Saturation for users with Apple Watch models purchased in the USA.

The Heart Analyzer app on Apple Watch can take a live Heart Rate right in the app. Launch the app on your wrist to the Heart Rate section, here button top right with the heart & arrow symbol will let you measure your Heart Rate with one tap.

Cardio Points represent a metric score based on the intensity and duration of heart rate activity in a given day. Cardio Points are earned when exercising with a heart rate elevated above sedentary.

Learn more and setup Cardio Points in the Insights tab.

Both these metrics are based on your maximum heart rate. Please complete the Cardio Points setup and optional setup Custom Heart Rate Zones in the Insights tab.

Starting in iOS 27 Heart Analyzer can also read your Heart Rate Zones direct from the Apple Watch app, you can find these in the Workouts section.

You can update these values through the Apple Health App. Simply launch the app, select the today tab bottom left, and select the profile icon top right.

Heart Analyzer supports Apple Watch face complications and iPhone/iPad widgets.

Unfortunately widgets are not supported in StandBy mode or on the Mac. (You can still enable them on Mac although update performance is unreliable)

The technical reason for this is because Heart Analyzer cannot access your Health data in these environments to update the charts and metrics. Hopefully this will become possible in the future.

You're not — anything you bought before is yours permanently. Heart Analyzer moved to a subscription for new users in July 2026, but every one-time purchase made before then (Complete Premium, Data Plus, Analytics Plus and Reports Plus) keeps working exactly as it always has, at no extra cost, and will keep working in future updates. If you bought an individual unlock rather than Complete Premium, screens outside that unlock will still offer an upgrade — that was true before the change as well. If features you paid for have stopped working, that's a restore issue. If problems persist there please get in touch via Simon@HelixApps.co.uk

All purchases go through Apple, so refunds are Apple's to give and we can't issue them ourselves. Visit reportaproblem.apple.com, sign in with your Apple Account, find Heart Analyzer and choose "Request a refund". Apple normally replies within a few days. If something isn't working rather than simply not being wanted, do email Simon@HelixApps.co.uk first — most of what we see is fixable, usually in a couple of minutes.

Yes — Heart Analyzer Premium supports Family Sharing. Once you've subscribed or bought Lifetime Access, everyone in your family group can use Premium by installing Heart Analyzer and signing in with their own Apple Account. Each person sees only their own health data; nothing is shared between you.

The Heart Analyzer Apple Watch app supports Apple Watch Series 4 & newer on WatchOS 10 & newer.

Sometimes, in the event of the app not installing to the watch, a reboot of both iPhone and Apple Watch can resolve the issue.

Yes. Heart Reports generate a PDF over whatever timescale you choose — useful for taking to a doctor — and can be password protected before you share them. Various metrics can also be exported as CSV for a spreadsheet or another app. Everything else stays where it is: your full history lives in Apple Health, which has its own export in the Health app under your profile picture.

Your health data is completely unaffected. Heart Analyzer only reads from Apple Health and never writes to it, so deleting the app removes nothing — reinstall it, grant access again, and your entire history is there.

Your purchase are also safe, they are tied to your Apple Account and restores on reinstall.

Heart Analyzer only requests read access to your data from the Apple Health app. If you choose to delete Heart Analyzer and re-install it later, your data will be unaffected.