AMo50i
96%Above typical
Your heartbeat intervals clustered tightly around one value, which points to raised stress (sympathetic) activity.
Heart intelligence for iPhone
Your heart, decoded
Your heart, decoded
in 30 seconds.
Rest a fingertip on the camera. Cardivo reads the light pulsing through your skin and turns it into heart rate, HRV, stress and energy. No watch. No strap. No wires.
Optical PPG sensing
Apple Health sync
Zero ads
11:55•••
72bpm
89%
851857838810814816812
Stress
19%
Low
Energy
37%
Steady
HRV score
59
Typical
The technology
Photoplethysmography
Reading your pulse from how much light your skin absorbs as blood flows through it.
The same optical principle behind smartwatches and pulse oximeters — now inside the camera you already carry.
The science
Light in.
Insight out.
Every heartbeat pushes a wave of blood into your fingertip. Your flash lights it up, your camera watches the color shift frame by frame, and Cardivo’s signal engine pinpoints each beat — down to the millisecond.
- 01
Cover the lens
Fingertip over the camera and flash. Light pressure, steady hand.
- 02
Hold for 30 seconds
Cardivo filters out motion and noise, then maps every beat-to-beat interval.
- 03
Read your heart
Heart rate, HRV, stress, energy and a cardiovascular score — each explained in plain language.
Extended insights
Most apps count beats.
Cardivo reads between them.
The gaps between heartbeats reveal how stressed, recovered and resilient you are. Cardivo measures five heart-rate-variability markers used in sports science and research — and tells you what each one means for you, today.
HRV scorei
59
Typical for you
Mean RRi
830msTypical
RMSSDi
19msBelow typical
Lower rest-and-digest activity right now — often after stress, poor sleep or intense exercise.
SDNNi
13msBelow typical
Your rhythm is less variable than usual — a common sign of strain or fatigue.
No jargon left unexplained. Every number arrives with one clear sentence and your personal range.
Health trend
One score.
The whole picture.
Cardivo blends your resting pulse, variability and trend into a single cardiovascular wellness score from 0 to 100 — benchmarked for your age, and built to move when your habits do.
- Resting pulse for your age — see exactly where you stand.
- Stress & energy — read from your nervous system, not a guess.
- Week-over-week trends — progress you can actually see.
Cardiovascular wellnessi
83out of 100Strong
Resting pulse
72 bpm
Medium
Stress
19%
Low
Energy
37%
Steady
Track everything
Every vital.
One timeline.
Oxygen, blood pressure, blood sugar and mood sit right next to your heart data — charted day by day, so patterns surface on their own instead of hiding in scattered notes.
Oxygen saturation›
100%
Today, 12:19
T
F
S
S
M
T
W
Blood pressure›
110/68mmHg
Today, 12:19
T
F
S
S
M
T
W
Blood sugar›
107mg/dLAfter meal
Today, 00:30
T
F
S
S
M
T
W
Mind & heart
Your mind sets
your rhythm.
Stress shows up in your heartbeat long before you name it. Cardivo pairs your readings with the same questionnaires clinicians use worldwide — scored instantly and tracked over time.
PHQ-9 · 9 questions
Depression check-in
How has your mood been over the last two weeks?
GAD-7 · 7 questions
Anxiety check-in
Put a number on the worry you’ve been carrying.
Focus check-in
A quick screener for attention and restlessness.
Share with your doctor
Walk in with data,
not guesses.
One tap turns weeks of readings and journal entries into a clean, professional PDF. Email it, print it or AirDrop it — your doctor sees the full picture in seconds.
Apple Health sync
Your Watch, scale and cuff data — all in one place.
Home Screen widgets
Your latest pulse, one glance away.
Health journal
Pressure, sugar, mood and notes with context.
16 languages
From English and Türkçe to 日本語 and العربية.
Cardivo Health Export
Date range19 Jul – 6 Oct
Measurements60
Journal entries88
| Date | Heart rate | HRV | Blood pressure | SpO₂ |
|---|---|---|---|---|
| 6 Oct, 19:46 | 94 | 70 | 106/67 | 100% |
| 6 Oct, 13:27 | 112 | 43 | 108/68 | 100% |
| 6 Oct, 02:18 | 84 | 75 | 106/67 | 100% |
| 14 Sep, 21:57 | 86 | 70 | 102/67 | 97% |
| 13 Sep, 12:00 | 82 | 46 | 99/67 | 97% |
| 13 Sep, 11:47 | 81 | 70 | 95/68 | 97% |
30secFrom fingertip to full heart reading.
5HRV markers, each explained in plain words.
16Languages, natively localized.
0Ads. Ever. Your attention stays on you.
Your heart is nobody’s business but yours.
No ads. No data brokers. Your health data is never sold and never used for advertising — not now, not ever.
Never soldNo ad networksSign in with AppleYou choose what syncs
FAQ
Good
questions.
Something else on your mind? Write to info@gocardivo.com — a real person reads every message.
How can a phone camera measure my heart rate?
With every heartbeat, a pulse of blood flows into your fingertip and changes how much light it absorbs. Cardivo lights your fingertip with the flash, tracks those tiny color changes through the camera and detects each beat. It’s called photoplethysmography (PPG) — the same optical principle behind smartwatches and pulse oximeters.
Do I need an Apple Watch or extra hardware?
No. Your iPhone is all you need. If you already wear an Apple Watch, Cardivo can bring that data in through Apple Health.
How do I get the most accurate reading?
Sit down, rest your arm, and cover both the camera and flash with light pressure. Stay still and quiet for the full 30 seconds. Warm fingers give the cleanest signal.
Does Cardivo measure blood sugar with the camera?
No — you log glucose from your meter or CGM in seconds, tag it fasting, after meal or bedtime, and Cardivo charts it right next to your heart data.
Is Cardivo free?
Cardivo is free to download. Cardivo Premium unlocks the full set of insights and starts with a free trial.
Is Cardivo a medical device or FDA approved?
No. Cardivo is a general wellness app, not a medical device, and it is not FDA-cleared. It does not diagnose or treat any condition. Use it to notice patterns and bring better questions to your doctor — and call 911 in an emergency.
How accurate is iPhone camera heart rate?
Research shows camera apps that measure with a fingertip on the lens are far more accurate than contactless ones, and work best at rest. Sit still, cover the camera and flash lightly, and keep your fingers warm — movement, cold hands, and pressing too hard reduce accuracy. Treat each reading as a wellness estimate and watch the trend.
What is HRV and why does it matter?
Heart rate variability (HRV) is the small variation in time between heartbeats. Higher HRV relative to your own baseline usually reflects better recovery and rest-and-digest activity; lower HRV often follows stress, poor sleep, illness, or hard training. Cardivo reports HRV score, RMSSD, SDNN, Mean RR, and AMo50 in plain English.
Can Cardivo measure blood pressure?
Cardivo shows a camera-based blood pressure estimate for wellness trends only — it is not a cuff. For blood pressure you act on, use a validated upper-arm cuff and log the reading in Cardivo or sync it from Apple Health.
Is there an Android version?
Cardivo is built exclusively for iPhone, so every pixel and every algorithm is tuned for its camera.
Your pulse is already
in your pocket.
Download Cardivo and take your first reading in the next 30 seconds.