Sorry this feature is not available with KoBoToolbox. Maybe you could keep a variable on the survey project that holds the language variable used by the respondents/enumerators while collecting data.
Hello @AndrewXLS
A workaround could be to calculate and store the ::language label of a (any) variable, with jr:choice-label. You will get the label corresponding to the currently selected language.
Attention: A user can switch the language any time during filling a form. So, the language info is always temporary…
Here is an example. You could change later the text types to calculate type. GetLanguage01.xlsx (11.7 KB).
Hint: The calculate will not fire again if the language is changed (but the item selection is not changed again).