How can I change my password? Unlock your diary and select Mini Diary → Preferences in the menu bar. You can edit your password here.

I forgot my password. How can I reset it? Your diary can only be read with your password, and resetting it isn't possible. This type of local encryption is what makes Mini Diary secure. It's therefore very important that you write down your password when creating a diary.

How can I change where my diary is stored? Unlock your diary and select Mini Diary → Preferences in the menu bar. You can change the location of your diary file here. (Please note that due to sandboxing, this option is not available in the Mac App Store version. You can download the non-sandboxed version to get this feature on macOS.)