Each language you add to your app could do double the downloads of your apps.
This app allows you to easily and quickly add translations to your apps.
More exactly, you should use
lmTranslation library to do it; then you could manage the db created by the library using lmTranslationDBManager.
The strength of this app is that it uses Google Translate.
I hope the video below is explanatory, but if you have questions to ask ...!
App (lmTranslationDBManger) and library (lmTranslation) are not free (they can seem simple to develop but, as alway, the work was greater than expected).
You can donate (for both) an amount between 10 and 20 Euros, depending on how much you think you are generous (or depending on how wealthy you are

).
If you want the library only... divide the amount in half
To receive these softwares, you can contact me at
[email protected]