City Maps 2Go Pro or Premium Offline Maps is being offered free for a limited time. Great app if you are travelling overseas and don't want to use mobile data.
There are 3 versions of the app: BASIC, PRO, & PREMIUM. Differences
Basic gives you one map, PRO gives you unlimited maps and no ads, PREMIUM is more customisation/lists.
PRO is available for iOS but PRO & PREMIUM is available to Android.
Steps to get the free pro or premium version:
1) Download the standard version of the app from the Google Play Store/iOS store.
2) Open the app. From the menu, select "Redeem a code"
3) Enter the code PROSUPP (for pro version) or PREMSUPP (for premium version - you must manually enter these codes, do not copy and paste!
4) You should now have pro access to the app for free
About the app:
▶ IN-DEPTH CONTENT: Unlike other offline map apps, CityMaps2Go features photos as well as tips and comprehensive in-depth info for millions of places.
▶ WORLDWIDE COVERAGE: CityMaps2Go covers the whole world. More than 150 countries, 60000 destinations, and 50 million places!!
▶ WORKS OFFLINE: CityMaps2Go works online and offline. Saving you from data roaming charges in foreign cities or connectivity problems in national parks.
▶ PLAN TRIPS: Remember and save all the places you would like to visit. Create lists and have your travel ideas ready when you need them.
▶ DETAILED MAPS: Explore your saves on a detailed worldwide map. Navigate streets, footpaths, and bikeways wherever you are.
EDIT: Use this link to redeem codes in iOS.