Frequently Asked Questions

What is Precordior?

Precordior is a company which produces health care solutions for mobile applications. Precordior is also a registered trademark. See Company section for more details.

What is CardioSignal?

CardioSignal is a mobile application which can be used for detecting atrial fibrillation (Afib).

Can I subscribe or buy CardioSignal app?

Yes, you can subscribe Atrial Fibrillation (AFib) measurement feature using Apple’s and Google’s subscriptions. We offer the same subscription plans for both iOS and Android.

  • 9.99€ / 1 month 
  • 24.99€ / 3 months 
  • 89.99€ / 1 year

You can also try the measurement feature 3 times for free before subscribing the service.


Where I can get an activation code?

You can get an activation code from our selected partners. Currently, we are piloting CardioSignal with Avainapteekit and during the pilot, you can purchase an activation code from the following Avainapteekit stores.

  • Apteekki Easton, Helsinki
  • Kontulankaaren apteekki, Helsinki
  • Kairatien apteekki, Rovaniemi
  • Kaarinan apteekki, Kaarina
  • Siilin apteekki, Siilinjärvi

After the pilot phase, you can purchase the code from all Avainapteekit stores.

Why do I need an activation code?

We are piloting our solution during the summer 2019 and the application is only available through our selected partners. Our partners can provide the activation code. See the list of our partners at CardioSignal product page.

After the piloting phase, we will provide different payment methods to subscribe our service.

How CardioSignal Atrial Fibrillation measurement works?

CardioSignal mobile application records data from accelerometer and gyroscope sensors for 60 seconds. The measurement data is sent to Precordior cloud where the data is analyzed and results are sent back to the application.

What happens to my data if I delete my account?

When you delete your account, all your information is deleted except the raw sensor data. The raw sensor data doesn’t contain any information which can be connected to a user who has generated the measurement data. Our Terms of Use which user must accept, gives us rights to use your data. This means that we use only the measurement data to improve our algorithms and to improve our services. We can also use the data in publications but all data is anonymous and we won’t release any information which can be linked to or identify any person.

See CardioSignal Privacy policy and Terms of use for more info.

How secure CardioSignal application and cloud are?

We take privacy and security seriously. All data is sent to the Precordior cloud over the secure encrypted HTTPS connection and the data is also encrypted in our database. Data doesn’t contain any identifiable information about a user. 

For passwords we use the PBKDF2 algorithm with a SHA256 hash, a password stretching mechanism recommended by NIST.  Precordior databases are using industry standard AES-256 encryption algorithm to encrypt both, active database and automated daily backups.

Does CardioSignal application store any information on a mobile device?

No. All measurement data is encrypted stored in Precordior cloud. 

There are other similar alternatives on a market to measure my heart. Why should I use CardioSignal instead?

CardioSignal is based on patented and patent-pending gyrocardiography technology which is utilising mobile phone accelerometer and gyroscope. We have tested our solution on clinical trials with over 300 patients in a Finnish hospital and  resulting sensitivity (correct diagnoses) was 95.3% and the specifity (no false positives) was 96.0%. The study was published in May 2018 by Circulation, the American Heart Association Journal, the world’s pre-eminent cardiology publication.

Other solutions on a market are based on different technology such as inferior camera-based pulse measurement but over 21% of recordings uninterprettable.

Can I try measurement for free?

Yes, you can. You can try measurement feature 3 times before deciding if you want to subscribe to the service.

I can use also Apple watch for detecting ECG. Why should I use CardioSignal application?

AppleWatch provides single-lead ECG for detecting AFib, but is relatively expensive product. If you already have a smartphone, you have the technology for AFib detection in your pocket. Just download CardioSignal app and you are ready to go.

Can I use the same account for both Android and iPhone?

Yes, you only need one account and you can use the same credentials for both Android and iPhone. 

Later this year, when we will add support for monthly subscription, you can also pay once and use the service on both devices with the same credentials.