Ghost SLS is an iPhone app developed by OurBigAdventure LLC for ghost hunters. It works as an SLS emulator, allowing users to scan for human figures without buying an expensive camera. The app comes with camera filters that help determine whether the detected figure is due to lighting conditions, which reduces the chances of false positives.

However, since it is not a true SLS camera, the results in low light may be less reliable. To compensate for this, the app recommends turning on the camera's torch light when scanning in dark areas. Ghost SLS also allows users to snap photos of what they catch and share them with friends or other investigators.

One unique feature of Ghost SLS is the ability to join a group chat with other users to discuss ghostly things. However, the app reminds users to take a break and turn on some lights if things get too spooky.

Overall, Ghost SLS is a useful tool for ghost hunters who want to scan for human figures without buying an expensive camera.