CardioSignal
Detect Atrial Fibrillation
Only for iPhone
Free · In-App Purchases
iPhone
Gain information about your heart health in just one minute with your phone.
CardioSignal application is a reliable and easy-to-use CE marked (Class IIb) medical device. The intended purpose of the application is to detect signs of atrial fibrillation in adults (aged 18 years and older).
Why use CardioSignal:
Atrial fibrillation is the most common heart rhythm disorder, and it may present without symptoms. With regular monitoring, it can be detected and treated early. When left untreated, atrial fibrillation can expose to e.g. stroke and heart failure.
How it works:
The app is easy to use: Lie down and relax. In the app, press the start button and place your phone in the center of your chest. The measurement takes 60 seconds, after which you will get the result shortly. If after a ‘Repeat the measurement’ result you get a ‘Signs of atrial fibrillation’ result, contact your doctor or care provider. Visit https://cardiosignal.com/support for more information.
Our patented technology utilizes smartphones' motion sensors to detect signs of atrial fibrillation, and is based on a decade of academic research and algorithm development. The accuracy of the CardioSignal app is 94% to detect signs of atrial fibrillation.
Please note that the atrial fibrillation measurement requires a 1 month, 3 month or 1 year subscription. Creating a user account is required. For more information, please visit https://www.cardiosignal.com.
Contraindications (= when the device should not be used)
This application is intended for individuals aged 18 years and older. Do not use it on those aged under 18 years. The heart rate of children and adolescents can be significantly affected by their breathing rate and a normal heart rhythm might look irregular.
Do not use the application for individuals who have a cardiac pacemaker. A powered-on phone held close to a cardiac pacemaker can create electromagnetic interference (EMI), which may alter the function of the pacemaker.
Read more about Warnings and Precautions from Instructions for Use: https://cardiosignal.com/support
In case of a health emergency, contact emergency services.
Product information
Device Name: CardioSignal
Intended Purpose: to detect signs of atrial fibrillation in adults (aged 18 years and older)
Operating Requirements: The device must have motion sensors (accelerometer and gyroscope)
Electronic Instructions for Use (eIFU): https://cardiosignal.com/support
Notified Body: Eurofins Electric & Electronics Finland Oy (0537)
Certificate Number: CR-03-1202-877-25
Manufacturer information
Manufacturer: Precordior Oy, Aurakatu 6, 20100 Turku, Finland.
Single registration Number: FI-MF-000014540
Authorized representatives
UK Responsible Person: Psephos Limited
Sussex Innovation Center, Science Park Square, Brighton, East Sussex BN1 9SB
United Kingdom
rep@psephos.com, +44 1273 704527
Swiss Authorised Representative: OMCS Medical GmbH.
Kriens, Regus Spoom Luzern, Am Mattenhof 2d, Kriens 6010
Switzerland
AR@omcmedical.com
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
Minor bug fixes and improvements
The developer, Precordior, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Health & Fitness
- Contact Info
- User Content
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Size
- 76.6 MB
- Category
- Medical
- Compatibility
Requires iOS 15.5 or later.
- iPhone
Requires iOS 15.5 or later. - iPod touch
Requires iOS 15.5 or later.
- iPhone
- Languages
- English
- Age Rating
18+
- 18+
- Frequent
Medical Treatment Information
Contains
Health or Wellness Topics
- In-App Purchases
Yes
- 1 month subscription 6,99 €
- 1 year subscription 44,99 €
- 3 months subscription 17,99 €
- Provider
Precordior Oy
- Precordior Oy has identified itself as a trader for this app and confirmed that this product or service complies with European Union law.
- DUNS Number
368490247 - Address
Aurakatu 6
20100 Turku
Finland - Phone Number
+358 505556202 - Email
johannes.lahti@cardiosignal.com
- Medical Device
Yes
- Precordior indicated this app is a regulated medical device and complies with European Union law.
- The information below has not been verified by Apple.
- Manufacturer SRN
- FI-MF-000014540
- Address
- Aurakatu 6
20100 Turku
Finland - Phone Number
- +358 50 5556202
- Email Address
- johannes.lahti@cardiosignal.com
- Use Statement
- The intended purpose is to detect signs of atrial fibrillation in adults (aged 18 years and older).
The indication for use is a medical professional’s or layman’s suspicion of atrial fibrillation or intention to exclude or detect the existence of possible atrial fibrillation. A finding suggestive of atrial fibrillation is to be confirmed and diagnosed by a health care professional. - Safety Information
- CONTRAINDICATIONS
This application is intended for individuals aged 18 years and older. Do not use it on those aged under 18 years. The heart rate of children and adolescents can be significantly affected by their breathing rate and a normal heart rhythm might look irregular.
Do not use the application for individuals who have a cardiac pacemaker. A powered-on phone held close to a cardiac pacemaker can create electromagnetic interference (EMI), which may alter the function of the pacemaker.
WARNINGS
Do not perform measurements if the skin on the chest is damaged in the measurement area.
The CardioSignal application is designed to detect signs of atrial fibrillation. It is not designed to detect other medical conditions such as Arrhythmias other than atrial fibrillation, embolism or stroke, heart attack, other cardiac or cardiovascular diseases.
If you experience chest pain, pressure, tightness, or believe you may be having a heart attack, call emergency services immediately. If you are not feeling well, or you have any symptoms, contact a health care provider regardless of what the application shows.
The information provided by CardioSignal consists of potential findings that need to be confirmed by a health care professional. Carefully follow the guidance on the result screens. Do not make further interpretations or take clinical action based on the potential findings. Diagnosis and treatment decisions are always made by your physician. Always consult your physician for all things related to treatment and medication.
Information stored within the service will not automatically be transmitted to other parties, even if the application interprets the user to be in need of medical attention. In the case that this application detects signs of atrial fibrillation, contact your health care provider.
In case of a health emergency, contact emergency services.
CAUTIONS
Do not perform the measurement while the phone is connected to a charger.
Other arrhythmias may cause the result interpreted by the application as ‘Signs of atrial fibrillation’. If after a ‘Repeat a measurement’ result you get ‘Signs of atrial fibrillation’ result, contact your doctor or care provider.
Cardiac arrhythmia may present with a heartbeat that is consistently outside the accepted range for CardioSignal (40–160bpm). If your heart rate is unusually high or low, over 160 bpm or less than 40 bpm, follow the guidance shown in the application.
If you have already been diagnosed with another arrhythmia, consult your doctor to determine what method of monitoring for atrial fibrillation is the most suitable for you.
The average heart rate results provided by the application are not to be used as a basis for further interpretation or clinical action. - Instructions for Use
- Visit the developer site
- Copyright
- © 2026 Precordior Oy