The Destiny Quest app is awesome and I use it all the time when I am helping classes look for independent reading books. There is nothing like having a mobile card catalog while roaming the stacks and some of the students have begun downloading it, too. This is why I can't believe I forgot about it last week.
Our Internet connection was a little uncooperative over the last two weeks and would go up and down throughout the day. The freshman were starting Pro/Con research papers and this made it difficult to use our LibGuide and databases for research, as well as locating books in the card catalog. For some strange reason my first instinct was to grab the Sears subject headings book to help locate books on the various topics since the Dewey numbers are in there. This worked well enough and books were located for everyone, but it hit me later - the catalog app still worked! It wasn't our server that crashed, it was the Internet connection. I had been running my phone off of the 3G and not the wireless every time the network went down. I could have used that instead and had the students download it to their phones. I doubt I'll forget this next time!