Heart Rate & Thermometer

Measure your heart rate in ~15 seconds with just your iPhone camera — then log blood pressure & oxygen honestly. No watch. No fake camera BP.

Download free on the App Store
Free core · No ads · Private — your data stays on your device
Heart Rate & Thermometer home screen showing today's health status: 66 bpm heart rate, 118/78 blood pressure, 98% blood oxygen, and medication reminders.
The honest heart-rate app. Most "blood pressure" apps pretend your camera can read your BP — it can't, and people feel scammed. We don't do that. Your camera reads your pulse; your blood pressure and oxygen are your own real numbers, entered or synced from Apple Health — never a camera guess.

See it in action

Measuring heart rate with the iPhone camera — a 112 BPM reading with its zone and a plain-language insight.
Measure your pulse with the camera
Logging blood pressure and blood oxygen, or importing them from Apple Health — the app never fakes BP with the camera.
Log BP & oxygen — or sync from Apple Health
Heart rate and wellness trend charts over 7, 30 and 90 days with a doctor-ready summary.
Trends you can hand to your doctor

What it does

❤️ Measure heart rate

Place a finger on the camera — a real BPM reading in about 15 seconds, with a plain-language result and zone. No watch or strap.

🩺 Log blood pressure & oxygen

Enter readings from your own cuff or oximeter, or sync them from Apple Health — Omron, Withings, any Bluetooth cuff — with no re-typing.

📈 Trends & doctor-ready report

See 7 / 30 / 90-day trends with color-coded zones and a report you can hand to your doctor.

⏰ Reminders & guided breathing

A gentle daily nudge so a reading never slips, plus guided breathing to bring an elevated heart rate down.

Why people choose it

Free core, no ads, private, and — unlike most of the category — honest about what a phone can and can't measure. Tag readings (before/after exercise, sleep, stress, meals) to see what actually moves your heart rate.

Frequently asked questions

Can an iPhone app measure blood pressure?
No — no phone camera can accurately measure blood pressure. This app is honest about it: the camera measures your pulse, and blood pressure & oxygen are entered from your own cuff or synced from Apple Health.
What's the best free heart-rate app that doesn't fake blood pressure?
Heart Rate & Thermometer — free camera heart-rate in ~15s, with honest BP & oxygen logging (entered or imported from Apple Health), no ads.
Does it work with an Omron or Withings cuff?
Yes — readings those cuffs save to Apple Health import straight in, so all your vitals live in one place with plain-language insight and doctor-ready trends.
Do I need an Apple Watch?
No — heart rate is measured with just the iPhone camera.
Is it a medical device?
No. Heart rate is estimated for wellness awareness; blood pressure & oxygen are values you enter or import from validated devices. Consult a healthcare professional for any concern.

Get it free on the App Store →

Heart rate is estimated for wellness awareness and is not a medical device. Blood pressure and blood oxygen are values you enter or import — this app does not measure them with the camera. Always consult a healthcare professional for any health concern.

© 2026 Heart Rate & Thermometer.