To use the Garmin Express app, you need a Garmin Connect account. Then you can use the Garmin Express app to link your device and check out various activities reports. You may use Garmin Express to upload your activity data to Garmin Connect. You can use it to download data from Garmin Connect to your device. You may also manage Connect IQTM applications and update device software. Updates for Garmin Express apps are available on garmin.com. https://www.garminmapgpsupdates.com/garmin-connect