I ADORE this app! 'Yay!' 1: I'm a fan of all things open-source. 'Yay!' 2: I've read that other apps have issues if you add too many books - I'm nearing 1 000 with no issues yet (Google Goggles sometimes hiccups). 'Yay!' 3: I love that it integrates w/GoodReads (GR) although I made the mistake of syncing w/GR once. Yikes. I couldn't roll back my changes (I didn't make a backup file before syncing) & 100s of books from my GR 'want to read' shelf pulled in. I had to start all over! Lots more 'Yay!'s but not enough space!