Been using Necrophone (Real Ghost App) for a couple months now. It’s basically a ghost communication and paranormal research app. Pretty solid if you’re into that kind of thing.
Here’s what you do: you can use the built-in sound bank to try and get spirits to respond. There’s also white noise, reverb, and echo features which are pretty cool. And the sound files are designed to cover a wide range of frequencies to make it easier to talk to the dead.
Look, if you’re into ghost hunting or paranormal stuff, you’ll probably like this. It’s not perfect – the UI could be better and it can get a little repetitive after a while. But overall it does the job. Worth checking out if you want a creepy ghost box app.