Update 2.0.2 has been released. The crash issue should now be resolved when creating a new transaction. We've also added in the ability to sort your categories by clicking the edit button on the Categories page. We are aware of the Total amount issue have released a new fix to Apple.
iPhone Update 2.0.2
We've released an update to Apple which should resolve the crashing issues when creating a new transaction. We've also added in the ability to reorder your categories and give you a total balance of all categories at the bottom of the home page. We'll post an update in the Update section once this has been approved and released.