IROthello 2.0

the author of this app says:

The IROthello game is limited to head-to-head play. But you can "invite" others to play against you, without requiring them to open the application first.

IROthello provides three different board sizes.

Note: The other player must have same version of IROthello installed. If he or she does not, you can beam it to them first.

Note

Other variations available: Reversi and Reversi Master.