Deaf "hearing" companion- Alerts for people who can't hear sounds they should

Great idea, although perhaps the use of "should" here ever so slightly carries a negative connotation that might be best avoided with alternate wording. Maybe something like:

"Alerting people to important sounds they cannot hear"?

How does this compare (or complement) iOS's built-in Sound Recognition system?

(seriously I would recommend anyone to have a good browse of the accessibility features, it's several layers of user interface that most people are unaware of)

> Detect sounds & get custom alerts via vibration, notification, or flashlight—even when phone is off.

What is meant by off here? Can an app detect and do these things when the phone is fully switched off?

My deaf friend passed away in a house fire because they couldn't hear a fire alarm. Sickening.

I built an app that listens to sounds and alerts deaf people with a flash, vibration, and notification. Emergency alerts are free (fire alarm, police siren, et). Convenience sounds like baby crying and door knock are $5/month.

Someone please be my 1st customer or tell someone deaf. Might save their life. Just wanna help people who can't hear and feed myself :)