About [[Wikimedia:Wikipedia-ios-nearby-distance-label-feet/en]]

Currently we don't support plural forms in iOS -- but there is a mechanism and we hope to add support for it soon. For now, use whatever horrible generic fixed form you would use when the appropriate value can't be selected. (Generally this label won't get used on phones set to Czech, so double-check if the meters form has the same problem...)

For meters, most languages just use 'm' to abbreviate it. It appears in a list of multiple values, so the abbreviation is encouraged. Not sure if an equivalent abbreviation exists for feet. But as brion mentioned, not a lot of Czech users probably would switch from metric to imperial units.