{"app_store_id":542891434,"slug":"cardiio-heart-rate-monitor-542891434","name":"Cardiio: Heart Rate Monitor","subtitle":"HR checker & beat analyzer","icon_url":"https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/ed/85/78/ed85785e-26f8-3551-7ec0-7bd2a8ee7a37/farhaddesign_3-0-0-1x_U007emarketing-0-8-0-85-220.png/512x512bb.jpg","store_url":"https://apps.apple.com/us/app/cardiio-heart-rate-monitor/id542891434?uo=4","price":0,"currency":"USD","rating":4.71811,"rating_count":58448,"in_app_purchases":true,"recent_rating":2.83,"recent_review_count":12,"reviews_checked_at":"2026-10-24T01:58:12.939Z","primary_genre":"Health & Fitness","version_date":"2026-10-18T07:20:51Z","updated_at":"2026-10-24T01:58:12.939Z","stale":false,"missing_since":null,"one_liner":"Measures heart rate with the iPhone camera and tracks heart rate, blood oxygen, and fitness trends over time.","verified_maker":false,"maker_site":null,"file_size_bytes":117758976,"minimum_os":"16.6","content_rating":"12+","language_count":13,"screenshots":["https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/ef/5b/6e/ef5b6e36-4162-b6ab-4ce9-d6b61593e89c/32f1edbe-266e-4824-96c2-c846d3b94a15_ss5.jpg/392x696bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/06/30/79/06307932-60b3-9765-6bd1-cc2f56ef8e1d/c4e6de07-1de0-411e-a640-d630b42d05ea_Gain-Insight.jpg/392x696bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/ca/61/83/ca618314-fcde-7014-253a-6f4c4f462e86/a714b4b7-504e-4df9-9037-78ac520f483a_monitor-progress.jpg/392x696bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/41/7a/ef/417aefd2-28ee-f74e-fd1d-944664473389/1c6b43a6-3102-413b-9ec0-9d1075fa6b80_fitness-exercises.jpg/392x696bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/cd/32/9d/cd329de8-f818-3c28-d392-f7a85eadc7e0/057fe94d-c03e-4fc6-848e-87d9423761f5_Build-Healthy.jpg/392x696bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/a0/8d/1d/a08d1ded-4176-cce1-3560-cc157cd39c40/f080ec4c-2618-45a9-ae26-04f30cd444ca_stay-on-track.jpg/392x696bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/4d/a8/0d/4da80d2e-f19d-a65e-2fac-24b4c50dcac1/ab6a1fb0-b1b6-40b8-8cac-d8631d87e7dc_Guided-7-Minute.jpg/392x696bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/67/9c/ad/679cadaf-d259-cb2b-7f8e-00c3bcf5903c/902f3361-855b-416f-b7bf-dccf35a97651_age-_U0026-gender.jpg/392x696bb.jpg"],"developer_name":"Cardiio, Inc.","editors_choice":false,"url":"https://apptierlist.com/apps/cardiio-heart-rate-monitor-542891434/","api_url":"https://apptierlist.com/api/v1/apps/cardiio-heart-rate-monitor-542891434","schema_version":"1.0","generated_at":"2026-10-24T09:37:22.156Z","data_as_of":"2026-10-24T08:12:13.240Z","description":"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.\n\n\nKey Features:\n\n1. Instant Heart Rate Monitoring—Accurate and Effortless\n• Place your finger on the camera for a precise reading in seconds.\n• Featured on CBS’s The Doctors and ABC News.\n\n\n2. All-in-One Health Tracking Made Simple\n• Measure heart rate, blood oxygen, and fitness effortlessly.\n• Compare your progress with others in your age, gender, and region for motivation.\n\n\n3. Quick Workouts to Strengthen Your Heart\n• Short, high-intensity 7-minute workouts that boost overall health.\n\n\n4. Stay in Control—Monitor Progress and Build Healthy Habits\n• Unlimited heart rate tracking to stay on top of your health.\n• Analyze daily, weekly, and monthly trends—sync seamlessly with Apple Health.\n• Export your data easily for personal records or to share with a doctor.\n\n\nReady for Deeper Insights? Unlock Cardiio PRO for the next level:\n\n• In-depth pulse waveform analysis\n• Blood pressure estimates and detailed oxygen tracking\n• Tailored calorie burn estimator for your activities\n• Personalized health comparisons by age and sex\n• Hypothetical life expectancy based on your heart trends\n\n\nWhy Choose Cardiio?\n\nCardiio combines simplicity with advanced tracking—perfect for anyone seeking accurate, no-fuss health monitoring. Enjoy a complete set of free features, with the option to unlock more when you’re ready for a deeper dive.\n\n\nWhat the Press is Saying:\n\nPC Magazine: \"Simple, beautiful, and pretty slick.\"\nCult of Mac: \"Cardiio is one of those apps that wows you...\"\nLifehacker: \"It’s a little mind-blowing...\"\n\n\nHow to Get the Most Out of Cardiio:\n\nTrack Daily: Start each day by checking your heart rate to set a baseline.\nFollow Your Progress: Use the dashboard to track trends and adjust your goals.\nUpgrade for More: Enjoy powerful free features or upgrade when you want even deeper insights.\n\n\nDownload Cardiio now and take charge of your heart health!\n\n\nDisclaimer:\n\nNOT FOR MEDICAL USE: Cardiio is intended for informational purposes only. If you have concerns about your heart health, consult a healthcare professional.\n\n\nAdditional Information:\n\nTerms of service: https://www.cardiio.app/terms-of-use\nPrivacy policy: https://www.cardiio.app/privacy-policy","facts":{"developer_id":534956039,"developer_url":null,"first_released":"2012-08-09T07:00:00Z","support_url":"https://www.cardiio.app/contact-us","privacy_url":"https://www.cardiio.app/privacy-policy","website_url":null,"app_version":"4.1.8","release_notes":"- Performance improvements \n- Bug fixes","rating_current_version":4.71811,"rating_count_current_version":58448,"star_counts":[512,367,2209,8891,46466],"genres":["Health & Fitness","Lifestyle"],"languages":["NL","EN","FR","DE","IT","JA","KO","PT","RU","ZH","ES","SV","ZH"],"content_advisories":["Infrequent/Mild Medical/Treatment Information"],"device_families":["iphone","ipad"],"made_for_iphone_duo":null,"chart":null},"freshness":{"apple_read_at":"2026-10-24T01:58:12.939Z","catalog_read_at":"2026-10-15T17:00:00.473Z","reviews_checked_at":"2026-10-24T01:58:12.939Z","summary_written_at":"2026-10-17T07:19:13.393Z","placed_at":"2026-10-09T03:59:53.925Z","scored_at":"2026-10-24T08:12:13.240Z"},"editorial":{"one_liner":"Measures heart rate with the iPhone camera and tracks heart rate, blood oxygen, and fitness trends over time.","what_is":"Cardiio is a Health & Fitness app for iPhone that measures heart rate when a finger is placed over the camera. The listing also describes blood oxygen measurement, short 7-minute workouts, daily, weekly, and monthly trend analysis with Apple Health sync, and data export. An optional PRO upgrade adds features such as pulse waveform analysis and blood pressure estimates.","good_for":["Checking heart rate at home with the iPhone camera","Tracking heart rate trends alongside Apple Health","Exporting heart data to share with a doctor"],"pricing":"Cardiio: Heart Rate Monitor is free to download, with in-app purchases on the App Store.","faq":[{"q":"Is Cardiio free to use?","a":"The app is free to download and the listing says a complete set of free features is included. The App Store lists in-app purchases, and PRO unlocks additional features."},{"q":"Can I rely on Cardiio for medical decisions?","a":"No. The listing states Cardiio is intended for informational purposes only and is not for medical use. It advises consulting a healthcare professional about heart health concerns."},{"q":"Does Cardiio work with Apple Health and export data?","a":"The listing says data syncs with Apple Health and trends can be viewed daily, weekly, and monthly. 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