CipherKit

I cannot figure out how t make this app work. I don't see anywhere to input or generate the key for the Vigenere cipher. Additionally, the keyboard hides the last few encryption options on the screen and the app seemingly offers no way to hide it so you can get to them. Tapping on "TO HEX" expands a tooltip stating it will convert the input text to HEX separated by "the specified delimiter" yet there is no way to specify a delimiter. The "View Recipe" screen displays a non-intuitive interface with no instructions or help screen to explain how it works or even what that screen is. This MIGHT be an interesting app if 1) I had any idea how it is supposed to work and 2) I could actually tap on the Vigenere cipher without the keyboard being in the way.