Good only if you have a web connection
I travel to China a couple times a month. It is hard to get Internet connected anywhere except hotels and airports. Since you must be connected to the Internet the app is of no use when you are at a restaurant trying to figure out the difference between fish eyes and chicken on the menu. When connected it does a good job translating. You can save phrases or words on one of the screens but if you leave that screen they all disappear.
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Multi Lang Dictionary and Translator + Text to Speech with English Spanish Chinese French German Korean Russian and more!, v4.8.2