All data lost! – Collectors: Movies Games Books Review

Interface is pretty nice, and it helped me catalogue stacks of books that I was going to put in storage, keeping track of the boxes in which they are stored. 2/3 through the job, with appx. 400 books scanned and in part manually added to the collection, the app started crashing repeatedly and has now LOST ALL the data. 5 hours of work absolutely wasted, and I now have boxes full of books and I have no idea what's in them. An absolutely frustrating experience. To the developer: help me out here!
Review by sam+boy on Collectors: Movies Games Books.