the Fitbit mobile app
Image Wallet is a picture gallery or slideshow for your watch! Have up to 50* images of your family, friends, pets, passwords, affirmations (etc) on your wrist.
You can give each picture a caption, and you can customise the text background colour to suit the picture.
Your images can fade from one to the next automatically, and captions can slide away so nothing messes with your photos.
To help you find a particular image, you can scroll through a list of all of the images available.
Image Wallet has numerous options and settings. You can choose how quickly the images change, how long the captions are displayed for, whether the caption should be displayed sideways, and more.
* Capacity depends on available storage space. Versa 3 and Sense should allow up to 100 images.
Cost: $1USD+tax.