Comparison

My Heart Counts vs MIR SMART ONE

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

My Heart Counts

Contribute to groundbreaking heart health research by tracking your daily activity. This app offers personalized insights, an AI health coach, and a unique "Heart Score" to help you understand your cardiovascular well-being while advancing scientific understanding.

Highlights
  • Citizen science participation
  • AI-powered health coach
  • Personalized Heart Score
  • Automatic activity tracking
  • Secure and private data handling
  • Optional physical activity testing
Features
Read full description

Turn your daily activity into a powerful tool for science with My Heart Counts, a revolutionary research study and personal health app from Stanford University School of Medicine, the University of Washington, and Imperial College London. Heart disease is the #1 cause of death worldwide. But what if we could change that, together? My Heart Counts invites you to partner directly with researchers to help us understand how activity, lifestyle, and fitness relate to cardiovascular health. This isn't just another fitness tracker, it's your chance to be part of the solution. WHY IS THIS SO EXCITING? - BE A CITIZEN SCIENTIST: You are not just a user; you are a research partner. By simply living your life, you contribute valuable data to one of the largest-ever studies on heart health. Your contribution can help unlock the secrets to preventing heart disease. - YOUR PERSONAL AI HEALTH COACH: This study includes a physical activity randomized controlled trial. My Heart Counts now features an intelligent coach powered by a cutting-edge Large Language Model (LLM). The coach provides personalized tips and encouragement to help you build healthier habits, one step at a time. - GET PERSONALIZED INSIGHTS: Discover your "Heart Score," a unique measure of your cardiovascular health based on your activity levels and other data. Learn more about your own patterns and how they contribute to overall health. - POWERED BY STANFORD MEDICINE: This app is developed and run by leading cardiologists and researchers at Stanford University, the University of Washington, and Imperial College London. You can trust the science and know your data is handled with the highest standards of security and privacy. HOW IT WORKS: 1. Download & Consent: Join the study in minutes with a simple, transparent consent process. 2. Track Your Activity: The app uses the motion sensors in your iPhone or connects to your Apple Watch to automatically and securely measure your daily activity. 3. LLM-Powered Physical Activity Recommendations: Our LLM-powered coach will provide motivation and personalized physical activity advice. 4. Get Your Score & Contribute: See your activity patterns, get your Heart Score, and know that every step you take is advancing our collective understanding of heart health. KEY FEATURES: - Automatic Activity Tracking: Seamlessly monitors your steps, distance, and active time. - AI-Powered Coaching: Chat with our LLM-driven coach for personalized motivation and guidance on your physical activity journey. - Personalized Heart Score: Get a unique score and insights into your heart health. - Secure & Private: Your data is encrypted, anonymized, and stored on secure servers. Your personally identifiable information is never shared. - Optional Physical Activity Testing: Participate in a classic fitness assessment to provide even more valuable data. DATA SAFETY & SECURITY: We take your privacy as seriously as your heart health and your data is protected by the highest institutional standards: - Open-source development: My Heart Counts is developed as an open-source project, allowing you to verify the functionality and security. We invite open-source contributors and are building on an open-source stack including the Stanford Spezi ecosystem. - Enterprise-Grade Security: Your data is managed by Stanford Medicine Technology & Digital Solutions (TDS), utilizing the same rigorous security infrastructure used by Stanford Medicine. - HIPAA Compliant: We are fully compliant with HIPAA regulations to ensure your Protected Health Information (PHI) remains safe and confidential. Join a global movement for better health. Your motion has meaning. Download My Heart Counts today and turn your daily activity into scientific discovery!

About

MIR SMART ONE

This app works with a connected device to measure respiratory function, including FEV1 and PEF. It provides real-time feedback with a traffic light system and stores results for easy tracking and sharing. Personal health data is used solely for calculating target values.

Highlights
  • Bluetooth Peak Flow and FEV1 measurement
  • Real-time data transfer and animation
  • Traffic light health indicator
  • Automatic test result storage
  • Symptom and note logging
  • PDF report generation for sharing
  • Apple Health integration
Features
Read full description

REQUIRES THE PEAK FLOWMETER SMART ONE ™ MIR SMART ONE is a revolutionary app - integrated with Apple’s app Healt- that communicates via Bluetooth Low Energy with a Peak Flowmeter (SMART ONE ™) for self-care respiratory management. The SMART ONE system (app + device) measures FEV1 and PEF using the same exact technology currently used in the most advanced pulmonary labs worldwide. The app makes the device start the PEAK FLOW and FEV1 measurement. FUNCTIONALITIES During the test, the measurements are transferred in real time from the device to the smartphone. An intuitive animation helps the user to perform the test at best. The app compares the parameter measured by the device with the target value set during configuration, displaying a traffic light health indicator (green, yellow or red) that makes it easy to interpret the test result. The test results are automatically stored on the smartphone and can be displayed later. For each test the user can add useful information such as symptoms, with the severity grade, and notes. NOTE that the personal data of the user (Date of birth, Height, Weight, Gender and Population Origin) are requested by the app for the sole and exclusive purpose of the calculation of Peak flow and FEV1 target values. SHARING With one tap the user can create and attach a pdf to an e-mail, ready to be sent to anyone is monitoring his health condition. The user can also select the time interval to be exported into the pdf. INTEGRATION WITH THE APPLE'S APP HEALTH the app SMART ONE is integrated with the Apple's app "Health". The personal and the health data sharing is performed under the apple's guidelines in order to protect the user privacy The user can give or deny to SMART ONE the permission to read from "Health" and/or write to "Health" each single type of data. SMART ONE can write to "Health" the following data (Peak Expiratory Flow Rate, Forced Expiratory Volume 1sec, Height, Weight) SMART ONE can read from "Health" the following data (Date of Birth, Sex, Height, Weight, Peak Expiratory Flow Rate, Forced Expiratory Volume 1sec). After the user permissions, the data sharing happens fully automatically, without any user specific action

Screenshots

My Heart Counts4 screens
MIR SMART ONE4 screens

Verdict

The call

The clearest difference is ratings volume: MIR SMART ONE at 22 against My Heart Counts's 5. MIR SMART ONE also leads on iOS requirement (12.0 vs 18.0). On price, rating, review sentiment and update cadence there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 2.8 for My Heart Counts against 2.8 for MIR SMART ONE. Both are backed by a comparable volume of ratings — 5 and 22 respectively. Written reviews are what separate them: 26% of My Heart Counts's written reviews are positive against 23% of MIR SMART ONE's.

UpkeepUpdate frequency

My Heart Counts ships an update every 2 months, MIR SMART ONE every 4 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

Scorecard2 real differences · 8 level
My Heart Counts versus MIR SMART ONE: the parameters behind the verdict, then further details
ParameterMy Heart CountsMIR SMART ONE
PriceFreeFree
Rating2.8 (5 ratings)2.8 (22 ratings)
Positive reviews25.6% of reviews — better23.1% of reviews
Number of ratings522 — better
Update frequencyEvery 2 months — betterEvery 4 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, Apple WatchiPhone, iPad, iPod — better
Requires iOS18.012.0 — better
Further details — not scored
Size167 MB22 MB
Age rating17+17+
DeveloperStanford UniversityMIR Medical International Research

Customer experience

My Heart Counts

All ratings3 ratings
Positive33.3%
Neutral0.0%
Negative66.7%
Written reviews121 reviews
Positive25.6%
Neutral23.1%
Negative51.2%

MIR SMART ONE

All ratings22 ratings
Positive36.4%
Neutral13.6%
Negative50.0%
Written reviews26 reviews
Positive23.1%
Neutral30.8%
Negative46.2%

Bugs and requests

My Heart Counts

Reported bugs

4 issues
  • Login and authentication problems
  • Six-minute walk test not recording properly
  • Inconsistent data syncing and storage
  • Incompatibility with newer iOS versions

Requested features

4 requests
  • Ability to input previous day's data
  • Integration with wearable devices and health apps
  • More detailed feedback and insights
  • Contact information for support and feedback

MIR SMART ONE

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

My Heart Counts

No in-app purchases

None

MIR SMART ONE

No in-app purchases

Questions

Is My Heart Counts free?
My Heart Counts is free to download, with no in-app purchases.
Is MIR SMART ONE free?
MIR SMART ONE is free to download, with no in-app purchases.
Which has better reviews, My Heart Counts or MIR SMART ONE?
My Heart Counts and MIR SMART ONE are both rated 2.8 out of 5 on the App Store, from 5 and 22 ratings respectively.
Do My Heart Counts or MIR SMART ONE have ads?
Neither My Heart Counts nor MIR SMART ONE shows ads.
Which is updated more often, My Heart Counts or MIR SMART ONE?
My Heart Counts ships an update every 2 months, and MIR SMART ONE every 4 months. Most recently, My Heart Counts was updated on November 1, 2026 and MIR SMART ONE on November 3, 2026.

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