"иной" is more oldfashioned, old word so it may be used also as a part of some 'fixed' expressions like "иной раз", "иной день", "иной приятель" and so on.
In those cases it might be translated as something like 'there may be such ... which...'.
The example:
Иной друг хуже недруга. = There may be a friend which is worse than an enemy.
Sorry for my English.