Black Screen Camera Free is a free Android app developed by Wolverine Technology. It falls under the multimedia category with a subcategory of photography. The app's main feature is the ability to record audio and video in stealth mode.

Once you press the record button, the screen goes black, but the app continues to record. To stop recording and close the app, simply double-tap the screen. However, it is important to note that the app requires camera access to record videos.

One downside of the app is that it contains ads, but a paid version without ads is available in the Google Play Store under the name Black Screen Camera. 

Overall, Black Screen Camera Free is a useful app for those who need to record videos discreetly.