Troubleshooting My Avent thermometer readings don't show in my uGrow App? If your Philips Avent Smart uGrow ear thermometer readings do not show in the uGrow app here might be a simple solution. Find out how to solve it yourself. Select all readings Make sure you've selected all the readings that you want to upload when syncing your data from the Avent connected thermometer to the app. Otherwise they'll be deleted from the thermometer.