Oximeter Store by HealthTree is a free app available on Android 9.0 that enables users to monitor their blood oxygen levels and heart rate in real-time. The app offers a PI function that provides additional information about the user's perfusion index. Users can set alarms and customize the highest and lowest levels of Spo2 and heart rate according to their physical condition.

The app features two modes to view historical values: graphics and list mode. Users can export their measurement data on a specified date and share it with their personal doctor. With a simple and intuitive interface, Oximeter Store is an easy-to-use app that provides comprehensive health monitoring for users on-the-go.