Now if only I could write reviews... but there's a Long outstanding bug where if you download an app in (in my case Australia) move to singapore, change your store to singapore, redownload the app. The store assumes you don't own the app cos it originated in Australia but your account is now singapore with the singapore downloaded app. And you cannot write a review cos the store is confused. But if the app is downloaded in singapore for the first time you can write a review. Invest the store location again and the inverse happens....