The Korea Tourism Association’s official website has the coolest nighttime English map of Gwangju. This map dissolves well the largely spartan landscapes of Seogu and Sangmu, Gwangju — making it much easier to locate your apartment. It does not, however, help in navigating the narrow maze of hyper-commercialized chaos in downtown. Ask your local cell phone salesman if there’s an app for that.
If you are new to the self proclaimed “world photonics” capital, have look at this very helpful and up to date map for getting to know the area a better.
The map covers all of Korea, so search for whatever you are looking for on the South Korean peninsula and it should direct you pretty well.