I do have some advice actually
One of the things that upset me the most in this job is those who think we need their help and they can make money off of us selling sex. Will your app stop that?

Oops just realised your app will cost us one way or another so you think you can do the same

Read this thread and see how many others have come up with similar ideas that never seem to be free for life even though they are doing it solely for 'our safety'

With uglymugs and other sites and forums we pretty much have warnings on bad punters so there is nothing an app could do that they don't do already

I'm sure there are other apps you can do to make money off of others hard work. Just not for this industry as we already have free sites and app for that

We do do this already. Plenty of people text or email each other when there's one to watch out for in their town and it's a matter of communication and trust, not having important information spread even more thinly so fewer people see it. For more serious incidents there's Ugly Mugs, but all of these things are only helpful if people use them and keep them updated.

I use saafe and ugly mugs, which are both invaluable, but I mean more instant warnings via watsapp or text between the girls, I dont think its happening here but would be great if it did x

It happens in some areas, but then it becomes an exclusive club and tends to fizzle out.