It's also an absolute gobsmackingly terrible term to use for this application.
I agree, too, the target audience might not know what a dead man switch is nor do you want them to think this is a last resort and literally only useful when they are dead. I'd market it as a "fail-safe switch" or "silent alarm." Maybe change the name to "Dead Spell Man" which sounds like something a non-English developer might call hang man and diffuses the "I want to kill my husband" kind of connotation.
Otherwise, the idea and intention of this app make it a really, really worthy thing to put out in the world.
There are millions of other innocuous games whose names don't invoke death, men, capital punishment, gallows, prison, nooses, lynching, strangulation, hanging, suicide, murder, etc. For God's sake, pick one of those, instead of "hangman" and "dead man's switch".
Might as well call it "Kill My Abusive Boyfriend".
The whole point is NOT to be obvious when an abusive boyfriend looks through all the apps on your phone.
Hangman's not even a plausibly amusing game. Who even plays hangman on their phone?
How about "Pokemon NO!"
If you can believe it originally this was a 2048 game (see the android version) but Apple suggested they would only approve the app if it was a hang man game and I named it 'Dead Man'. I wish I were joking. You have to understand that this functionality did not exist before today and my target audience previously were travellers, students, journalists, and privacy conscious people so I'm stuck trying to be relevant to multiple sets of audiences and a technical term that has 'dead' and 'man' in the name.
Apple would only approve the app if I integrated it into the existing app but not with the 2048 game because the name wouldn't match the functionality and a dead man switch app called 2048 doesn't make sense for the majority of users. You seem to be missing the fact that this app already exists with a current set of users already. Calling it Glorp Zonker Pro is not exactly relevant to them.
tl;dr Apple is forcing this unfortuate circumstance
What you described is called gaslighting
Since I’ll bet your target audience doesn’t already know what a “dead mans switch” is, you get a chance to come up with a better targeted term.
As I wrote in the article, the ideal scenario was that I had two separate apps where it has a completely different name, but due to Apple restrictions I was forced to name it Dead Man (actually suggested by Apple themselves when I spoke to them over the phone discussing this issue) as the name has to cover both parts of the functionality even though the target audiences are completely different.
But this is not really going to be used by abuse victims of their own accord, it's more likely to be picked up by charities that need to set up a robust support network. It's a fine balance of SEO, networking, naming relevance, and sensitivity that I am tuned into.
It absolutely isn't. Lots of things have dead man switches, like locomotives and heavy machinery, and they're named as such.