The Android SDK currently only supports TappyBLE devices. When using the SDK, please keep in mind that your phone must be running at least Android 4.3 to support BLE. Additionally, not all phones support BLE even if they do support Android 4.3+ and Bluetooth 4.0+, so please confirm that the device you intend to use has BLE capability. For additional documentation, please see the repository on GitHub.
If you wish to use the TappyBLE on your Android device without doing development, the TappyBLE demonstration application supports many common Tappy operations and is available on the Play Store. The source code for this application can be found in the SDK’s GitHub repository.