Hologram 3D Showcase is a free multimedia application developed by Trioxin245 Software. This Android app offers a collection of 3D holograms that can be projected through a pyramid projector. The app features animated scenes of Space, Earth, Christmas, and Halloween, and it can automatically change the scenes at regular intervals.

One of the main features of Hologram 3D Showcase is its compatibility with projectors above or below the display. The app also allows users to flip objects depending on the display type. Additionally, Hologram 3D Showcase is free to download and use.

Please note that a hologram projector is required to use this app. Users can either buy one from Amazon or make their own.