I loved GitBox, so I'm more then willing to give this app the $2 benefit of the doubt, but the AppStore description doesn't do a great job describing what the app does. It's a list of common app phrases and terms in different languages, but does it localize your apps for you, or do you have to copy and paste the words out of the app?
It does not manage Localizable.strings (yet), but copy-paste is fairly efficient. It makes a copy of a complete line in .strings format: "key" = "value";