Hey there! I'm a Singaporean, and have lived in Korea previously. I'm fluent in Korean, English and Chinese so hopefully I'll be able to help with your translations. As the project outline is pretty brief, I'm not sure how the workload for this project is like, so perhaps you could let me know? :) I converse and communicate to my Korean friends via Kakao in hangul, so translating some daily phrases would be totally fine. Since I have to travel overseas very often for work, I actively use all the messaging apps you mentioned above as well, WhatsApp for Singapore, WeChat for China, FB for USA and Kakao for Korea!