Spider On Screen Prank is a free Android app developed by njsoft. It is a prank app that displays a very realistic animation of a spider walking on the screen of your phone. The spider animation is displayed on a transparent background, and it appears on top of all other running programs on your phone, even over the lock screen.

This app is perfect for entertainment and to amaze your friends and family members. You can easily trick your friends into thinking that there is a real spider moving on the screen of their phone. The best part is that you can use your phone normally while the spider animation is running.

To start the prank, you need to grant the app floating window permission to draw over other apps. Then, open the app and click on the start button. To stop the animation, you can either click on the notification you received from the app in the status bar or clear your recent apps history. If you're not receiving any notification, then you need to allow notifications access for this app in your notifications manager.

Overall, Spider On Screen Prank is a fun and entertaining app that can scare your friends and family members. If you're looking for a harmless prank app, then this is definitely worth checking out.