Blitz anyone?

[TheBitPilot]

I think the best option would be for the replay to watched while the timer runs and to just add about 30 seconds per move. That way you can choose to watch it all or end it and start your turn. I think your timer should start the second your opponent hits done. I don't think the app would need to stay open, but you wouldn't want to leave for very long because the game wouldn't wait for you.