I made an app for my computer a long time ago, some of you may have downloaded it. What I found was after you do this for a while, you either write a log daily for that book you are going to write so you can become a famous falconer or you write down the basics and it doesn't take an app to do that. LOL Now days, I write down start weight, where I hunted so I don't hit the same place over and over, end weight, maybe a comment if something happened special and what game was caught.
It always amuses me that people write down what the food they fed their bird weighed, can't you sort of figure that out by start weight and end weight? LOL