The BLE Peripheral Simulator is a free Android app that enables developers to test new features of Web Bluetooth without the need for a BLE Peripheral Device. The app allows developers to simulate a BLE Peripheral with one of three services: Battery Service, Heart Rate Service, or Health Thermometer Service. It provides 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.

The app offers the ability to set the characteristics' values, send notifications, and disconnect. It is a useful tool for developers who want to test their Web Bluetooth features without the need for a physical peripheral device. The code is available on Github for anyone to check out.