What's the best Android app for monitoring heart rate, tracking stress levels, and getting insights into overall well-being using just my phone's camera?

Heart Rate Monitor - HeartIn is an Android app that uses your phone's camera to monitor your heart rate, track stress levels, and provide insights into your overall well-being. It leverages the phone's camera and flash to detect subtle color changes in your fingertip, which correlate with your pulse. This data is then used to calculate your heart rate and estimate your stress levels. The app also provides energy level assessments. To use it, simply open the app, place your fingertip over the camera lens, and remain still while the app takes a reading. The app keeps a history of your readings, allowing you to track trends over time and identify potential health concerns. While the app offers a convenient way to monitor your heart rate and stress levels, it's important to remember that it should not be used as a substitute for professional medical advice. If you have any concerns about your health, consult with a qualified healthcare provider. The app is rated 4.6/5 on the Google Play Store.