A free app for Android, by Preventicus GmbH.

How is your heart beating? Is it regular or irregular? How fast is it? What causes your heart to beat irregularly?

Preventicus Heartbeats is an app for the self-monitoring of the heart rhythm with a smartphone camera. It allows you to determine the frequency of your heartbeats and to check for the presence of any heart rhythm diseases, especially atrial fibrillation.

The app comes in two versions. The basic version allows you to measure your heat rate and can offer a glimpse on suspected heart problems. The full version, meanwhile, has extra features which can provide you a clear picture of your heart health, such as detailed analysis of results, longer measurement option, and more.

The results of the measurements are tentative and only give hints of a possible disease. You still have to consult medical experts to confirm any diagnosis.