The BLE Peripheral Simulator is an Android app that allows developers to try out new features of Web Bluetooth without the need for a BLE Peripheral Device. You can check the code at: https://github.com/WebBluetoothCG/ble-test-peripheral-android Developers can use the app to simulate a BLE Peripheral with one of three services: * Battery Service * Heart Rate Service * Health Thermometer Service Developers can use the new Web Bluetooth features to connect to the app to Read and Write Characteristics, Subscribe to Notifications for when the Characteristics change, and Read and Write Descriptors. From the app, developers can set the characteristics' values, send notifications and disconnect.