If you would like to have everything for a trip in one place this app does the job. It takes a good deal of effort to get the data into the system but the results and the fact that you can add actual results including pictures, expenses etc, is really a nice feature. At the end of the trip you can create a book at what ever level of detail that you wish. At times I wished it was easier to put data into the system and that the input screens could be customized. Overall this is a good app and I dont know of any other application that is equal. As far as some of the other review criticisms I have the app on both an iPad and iPhone. It is also backed up to Dropbox. It has never crashed on me.