Did you always ask yourself, why it is not possible to use the internal heart rate sensor of your phone or watch while doing sports?

This app/tool can display your heart rate, measured with the internal/built-in sensor of your phone or full android smartwatch. The advantage using "HeartOnTop" is the combination of your internal sensor with every app, without need of support from the combined app. It will show your heart rate in a small window in foreground of your screen, so you can take a look at your heart rate and your preferred app (e.g. running app) simultaneously. Moreover, it is possible to drag the heart rate monitor to every position on your screen you want and even set to the size you need. The app will only record your heart rate if it detects your pulse, so you can leave it running while workout and measure continuous or at times.
This app has two main functions. On one hand it can track your workout heart rate continuous, on the other hand it can measure the heart rate in interval of whole day.
Originally, the app was designed for the use on watches with full android system like Zeblaze Thor (not Android-Wear!). In front of this background, we created big-sized buttons and views as well as a simple user interface to control the app on small screens. However, the app should work on most phones with built-in heart rate sensor. Just try it and if it works and you like you can purchase.

Functions:
* Show your heart rate in foreground
* Continuous heart rate tracking (incl. average, high, low, duration)
* Always on heart rate monitoring
* Full day average, high, low heart rate
* Periodically check your heart rate
* Save records to your History
* Designed for round android smartwatches

Working devices:
Zeblaze Thor
S1 MTK6572
Lemfo LES1 MTK6580
Kospet Hope

More suggestions
Diggro
No.1
KingWare KW88 (Day tracking does not work jet)

Requirements: Built-in heart rate sensor

Note: Accuracy does not depend on this App. It is dependent on your sensor-type.

In future we have a lot more features in plan.
If you have some good ideas to implement, please let us know: [email protected]

Or join discussion in forum:
http://roundandroidwatches.proboards.com/thread/1754/new-heart-rate-tracking-heartontop?page=1

Have fun tracking yourself! Enjoy!