5 stars: Amazed. Tried it during a headache when I could literally hear my pulse and it matched up exactly. Tremendous not to press, only rest the finger lightly on the camera. I don't understand how it works but it really does.
3 stars: Good app, but one major flaw. There is no option anywhere to disable the flash. Which is annoying because makes you look like a fool in public, and the Camera of for example S6/S7 is so sensitive that you don't need the flash to measure the heartrate in medium or strong light
3 stars: It is nice, but there's one problem... I'm using a Motorola G5 and it burned my finger
3 stars: The flash burns my finger I cannot keep my finger there long enough.
4 stars: Does the trick. It nags you to create an account every time you open it though. It would be a more convenient and straightforward app without that.
5 stars: This app is failed against the feature heart rate in samsung galaxy s5
3 stars: May not be accurate but gives a rough idea. Limit of 3 readings is a bit restrictive, specially when ads are already shown
4 stars: It works really well. I checked using my Adidas smart fit HR at the same time and they showed me the same value. It's nice that it logs the results and you can even categorize the readings.
4 stars: Only works when very still! Any movement seems to mess it up.
5 stars: A must for the ones who want to keep a record of their physical fitness.
5 stars: Great App. Use it to check my heart...