Export dronedeploy map to iphone or android as offline map

May I know is possible export the dronedeploy map (PDF Map) into iOS with what kind of the apps can show me gps on the map ?

The reason is I would like use it for farm.
due to the farm which have different LOT number , I would like to know what actually location I standing. the farm no cellular line connection.

May I know is possible ?
and what kindly app can be use in the iOS for this fuction.