There are several trip planning apps available. They are very useful for calendarizing your activities, travel schedule and free time.  We also use them to store the location of all of the tickets.  For instance if we are traveling by train and it uses a paper ticket I will enter into the app that the tickets are paper. If the tickets are online then I enter the app that contains the tickets.  This keeps me from fumbling around as we are trying to enter a museum for the tickets or when a train conductor is coming through checking the passengers.

TIP: if you don’t do the work up front to load the data the planning app is not of much use.