What are some alternatives?
When comparing Instagfy and SketchAR for Hololens, you can also consider the following products
Tall Tweets for Google Slides - Tweet your Google Slides as animated GIF images
Becrux Wally - Wally is a Qt4 wallpaper changer, using multiple sources like files, folders, FTP remote folders, Flickr, Panoramio, Ipernity, Photobucket, Buzznet, Picasa, Smugmug, Google, Vladstudio and deviantART images. Now it's available in many languages!!
Plotaverse - Photo animation made easy, animate like the pros
Variety Wallpaper Changer - Variety is a wallpaper changer for Ubuntu which is featureful, yet slim and very easy to use.
GIPHY GIF maker - Create animated GIFs from videos (by Giphy)
Muzei - Muzei is a live wallpaper that gently refreshes your home screen each day with famous works of art.