The easiest to use with everything one needs. Even totaly useable for those of us who are vision impaired. The online search works on my ipad, but the save option and voice over does not work on my ipad. But does work on my iphone. And the app will not icloud sync between devices. One has to search and save on iphone, then email yourself and use the import option on the ipad. I have repeatedly contacted customer service on this issue with no response or bug fix.