the Fitbit mobile app
This app lets make it possible to simply display your photos from Google Photos to your Fitbit device.
NOTICE: You have to pay a small amount via the schmuckli.net Store. After your purchase, you have to enter the email in the app settings in the Fitbit app. This email address doesn't have to be equal to your Google account's registered email.
Simply connect the app to your Google Account and you can start the app. You can only see your albums. When you click on a album, it will load the first photo (Please note that this could take up to 30 seconds until it will load the image, depending on your internet connection and connection between your smartphone and Fitbit device). With the buttons on the right, you can go to the next or previous photo.