I think the reason Ouija boards get a bum rap is because they have been used for so long...Meaning,
older or ancient spirits/demons/whatever recognize them immediately & go "oooo I can have some fun with these people, look what they left out in the open!"...
But computers haven't been around very long in human history...Not saying an app couldn't attract
a storm of bad energy you aren't prepared for...but it's probably safer to leave the app running (without saying things like, "ANYONE/THING want to communicate with me? ANYONE can use this! Please talk to me!") all day then leaving a Ouija board/planchette out.
A medium told me if you choose to keep a board, keep the planchette away from it when not in use.
The real carved wood boards can be very beautiful & people frame them for art.
Also, I won't be doing anymore EVP sessions in my home after reading what happened to others.
Another good tip is to not treat the spirits like performing trick ponies...demanding a noise or word,
will make nicer ones flat ignore you...and bad ones pissed off...lol