The download button opens the iTunes App Store, where you
may continue the download process. You must have iTunes installed with an
active iTunes account in order to download and install the software. This
download may not be available in some countries.
From Al-Ruwad Ltd:
Note: This app is iOS 7.0 ready. This simple but amazing app would give you full offline map support in Batticaloa. If you are just travelling or even residing to Batticaloa, you should be sure that you have this small tool with you. Why? Simple! Because this is very advanced map with 18! Zoom level maps for Batticaloa. Maps are fully offline, so you don't need a costy internet roaming to digg arround, and in case you are lost to check where are you in offline map.