BenchMap is a free app that will allow you to search for NGS survey stations, and view the maps and metadata for those that are still available. The app is fully compatible with iOS, macOS, and Android.

On the main screen, you can use the search bar to find a specific station, or select one from the list that is already displayed. It is also possible to filter the list by type of station, or by status. Once a station has been selected, you can view its full metadata, which contains all the available data for that location.

If you want to download the latest updates to the app, you can go to the settings screen, and enable the auto-update option. The app can be used offline, so you don't have to worry about the amount of data that you will be consuming.