VanShow is an interactive presentation app that is optimized for visualization of proposed construction projects.
In addition to frame accurate, forward and reverse playback controls for stills and animation, the sideswipe gesture allows you to switch from an existing condition to up to 3 alternatives on the fly during playback.
Training wheels mode brings up an overlay that lets you show or hide the gesture controls legend during playback.
NOTE: A vanshowapp.com account is required to access playback functionality.