A similar remark: "annual salary". The context might include part-time folks, consultants paid per hour, etc. where comparisons of annual salary are much less informative than just $/h.

You don't even need the app to discern between annual and dollar per hour, to the app it's just a number. Actually even an uniterpreted string would do.

Yes, good point. The OP should change it to be more generic to the users context.

Either allow configuration of currency, or a customised message or something like that.