In this application you can assign ten names (of things you want to take into account) to ten different buttons so that with a simple click click you will memorize the name you assigned to the button together with the data and time, to then be able to see a list with all the events you have stored or a summary with data and start and end time and the number of repetitions of each event.
Its use depends more on the user's imagination than on the application itself.
For example, I use to keep track of how many times not to follow the diet, when I refuel the car, start work and end work, how many times I do sports ...