iCare Health Monitor is an app that can measure your blood pressure, oxygenation, heart rate, hearing, vision, psychological issues, and lung capacity. If you’re considering buying a fitness tracker or smartwatch to measure all these vitals, you may drop those plans and try this app instead. Available for both iOS and Android, this app’s intuitive interface presents all the information you need right on the screen. The app is free, and you do not need any medical knowledge to use or comprehend its functionality.