If you are wanting to use our Powermeter with a 3rd party app, such as Zwift, it will connect directly if being used on an smartphone or tablet. If you are going to be using the app on a laptop, our powermeters will not connect directly to your computer. The BLE protocol used for our powermeters (and most fitness sensors) is different than the Bluetooth protocol of a computer. The only way to get it to work with a computer is with an ANT+ dongle or using our Viiiiva Heart Rate Monitor as an ANT+ to Bluetooth bridge. You can learn more about the Viiiiva's bridging capability here.