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iOS Last update: 2018.05.06  

iOS Apps are released. Download via iTunes.

iPlacard
 Current version: 2.1.0 (2013.12.21)
OS: New version (for iOS 8.0 or lator) is pending, now.
Free

iPlacard displays a short phrase using large letters on the screen. You can send a message to people who are at a relatively short distance quietly.

 


 

RotSquare
 Current version: 2.1.0 (2012.01.09)
OS: RotSquare is not available with the current iOS.
Free
RotSquare is a puzzle like well-known 15-puzzle. However, pieces move as if the game board is a torus. RotSquare is originally developed on NeXTstep, then OPENSTEP, and Mac OS X. This is the port on iOS.
RotSquare is not available with the current iOS. Update is being considered.