apps / 542891434
Cardiio: Heart Rate Monitor
HR checker & beat analyzer
Cardiio, Inc. · Health & Fitness · Free · US storefront
- rating
- 4.7 ★
- ratings
- 58.4K
- updated
- Jun 26, 2026
- released
- Aug 9, 2012
v4.1.7
visible word pool · 8 words
title 27/30 chars · subtitle 26/30 chars
App Store search indexes the title and subtitle together with the hidden 100-character keyword field as one combined pool: any phrase assembled from those words can rank. These are the words of Cardiio: Heart Rate Monitor's pool that are public — the keyword field is not exposed by any API.
from the listing
Track Your Heart Health for Free, Anytime, Anywhere with Cardiio. Join over 9.84 million users who trust Cardiio for accurate, easy heart health monitoring. Transform your iPhone into a powerful health tool — track your heart rate, boost fitness, and gain valuable insights, all with just your phone. Key Features: 1. Instant Heart Rate Monitoring—Accurate and Effortless • Place your finger on the camera for a precise reading in seconds. • Featured on CBS’s The Doctors and ABC…
latest US reviews
★★★★★
Interesting concept that works
Unbelievable how accurate this is. I do this about once per week and show the results to my dr. Gives me peace of mind.
— bobz911
★★★★★
Mostly accurate
I use this app to track my waking heart rate and the times when I exercise. Most of the time, it’s easy to use and to get an accurate reading. Sometimes, it can read that my finger is blocking the camera lens, but it won’t give me an accurate reading. Other times it has…
— BillybobJimmyPat
★★★★★
Slow and Hard to Work With
I do think the app is organized, however it’s SO difficult to work with and it takes like ten tries each time you want to record your heart rate. I tried using this for a class, but by the time it recorded, my heart rate would lower after a workout. It’s just not reliable and…
— enhhhhhhhhkkkkkkkkkk
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