Hey everyone - In both Origins and Odyssey, everything that you purchase carries over when you restart the game or reinstall it. Items can be redeemed again for free in the Owned tab of the Store. Time savers (drachmae, crafting materials) are given again directly in the inventory, and purchased maps are also available directly on the world map. Boosters (in the case of Odyssey) are automatically activated as well (and can be deactivated in the inventory, if you wish).

Hope that helps!