Built for POTS & dysautonomia

See every episode,the moment it happens

Cardiogram watches your Apple Health heart rate and automatically detects 30+ bpm rises within 5 minutes — time, baseline, and peak logged for you.

Try Cardiogram for free

Read-only access — your data never leaves your iCloud

Benefits of Cardiogram

Detect, understand and report
your episodes

Your watch already records the data. Cardiogram turns it into episodes, patterns, and a report your cardiologist can actually use.

Automatic episode detection

A 30+ bpm rise within 5 minutes is flagged the moment it happens — with how long it was sustained, the number that matters for the POTS criterion. Workouts and recovery are excluded automatically, so your morning walk never counts as an episode.

Symptoms, meds & triggers

Hydration, salt, sleep, medications and how you feel — connect the dots between your day and your heart.

DizzinessPalpitationsFatigueBrain fog

Trends your cardiologist will love

Weekly summaries, resting heart-rate trends and episode heatmaps — exported as a clean PDF stating the exact criterion used, ready for your next appointment.

How it works

Three steps to answers

No new hardware, no manual logging. See it working in your first day.

Connect Apple Health

One tap, read-only access. Cardiogram works with the heart-rate data your Apple Watch already records — no wearing anything new, no manual logging.

Cardiogram app showing a list of days with average bpm, episodes, and symptoms

Episodes appear automatically

Every 30+ bpm rise within 5 minutes is logged with its baseline, peak, and duration. Add symptoms as they happen.

Day detail view with heart-rate chart and detected episode callouts like 72 to 118 bpm in 4 minutes

Export your PDF report

Bring a clean, criterion-referenced report to your next appointment — episodes, trends, and symptoms in one place.

Export report screen with timeframe options and PDF report sections to include

Private by design

Your heart data stays yours

Cardiogram reads your heart-rate data directly from Apple Health, with analysis on your device and journal sync through your private iCloud. Technical crash reports go to Firebase Crashlytics to help us fix problems; we do not add health readings or journal contents to those reports.

Read-only HealthKit access 100% on-device analysis Synced only via your iCloud

Try Cardiogram for free

Pricing

One subscription,
every insight unlocked

Start with a 3-day free trial. No payment now, cancel anytime.

Cardiogram Pro

Cancel anytime

3-day free trial

$29.99/year in the US· about $2.50/month

Included

Automatic episode detection
Doctor-ready PDF reports
Real-time episode alerts

Trends, heatmaps & insights
Unlimited heart-rate history
Pause or cancel anytime

Try Cardiogram for freeNo payment now · local App Store pricing may vary · cancel anytime

Detect, understand and reportyour episodes