This app was mentioned in 3 comments, with an average of 1.67 upvotes
Just googled about - it's hwahae, here is the Android version - dunno about iOS/Windows. It's incredibly useful if you are patient enough work through it, someone has an excellent blog entry/tutorial on how to get started I cannot remember who. :(
maybe the App Hwahae 화해 might be interesting? https://play.google.com/store/apps/details?id=kr.co.company.hwahae
If you can read Korean, this is my go-to-app for Korean cosmetics ranking and analysis.