Like on web, missing a lot of basic feature

I liked this game on internet, but this app is not ready for App store!
Once a game started, we cannot go to main menu and back to the game started previously.

There is NO save game! Am i supposed to play the game in one shot?
Seriously, save game is not facultative, without it, the game is not playable.

Bioke about Pandemic 2.5, v1.01