BackupHK is a free, unofficial Android app for HKmap.live. It provides real-time updates on the situation in Hong Kong. This app does not require any personal information from the user, making it an anonymous option. It is recommended to download offline maps before using the app in a Wi-Fi environment.

BackupHK offers some unique features, such as anonymous usage and offline maps. It also provides real-time information, thanks to its close collaboration with HKmap.live. The app is easy to use and provides essential information for those in Hong Kong.

Overall, BackupHK is a useful tool for those seeking real-time updates on the situation in Hong Kong. Its anonymity feature is a plus, as users can access information without revealing their identity. The offline map feature is also a great addition, allowing users to access maps even without an internet connection. However, the app could benefit from a more user-friendly interface.