This is a really terrific app, but I've discovered one major flaw: the program is capable of losing data in a crash and there's no option to force-save your data other than quitting and restarting. It appears that it only saves the data when you quit the app normally (I've tried adding fake data and force-quitting - the fake data disappears) and I feel this is a big problem with the app. Rare as it may be, apps crash and so does OS X (just the other day my laptop refused to wake from sleep). Bottom line: the app should employ a save feature instead of error-beeping when you hit cmd-S.