We have some bad news for players that are using the iphone app, called Harvest Time, to manage their farms. The developers had discontinued maintenance for the iphone app, and the app is no longer available in the apple store.
The developers made this decision based on technical reasons, more precisely the iphone app cannot be brought at the same level as the browser version of the game.

If you have the Harvest App installed on your phone you will still be able to use it, but if you delete the app you wont be able to install it again.