An initial thought...Perhaps, it's use case is possibly a little more Western World-centric due to the audio/video aspect of things. Where recording a perpetrator is a deterrence against further aggression.
We do a lot of work with NGOs and human rights defenders where security, especially in developing nations, is a different concept. What I mean is that in many emergency situations, the last thing you want a normal person (starting to panic and who's decision making process is starting to slow down and become impaired under pressure) to do is start holding a video camera up. Especially in the context of a case like a kidnapping or under fire. That will only have only the effective of a) probably antagonising the attacker, leading to the phone being snatched and/or thrown away (thus breaking the most important aspect, the real time reporting of current location)...b) in the most high risk situations, the user needs to be getting themselves to safety, as this initial 30 second reaction is the most important - focusing on the video and audio on the phone will slow this down and undo the natural inbuilt reaction to run like hell...
Anyway, just a thought, awesome project and good on you for doing it.
(Please excuse the following: Plug for our security planning tool, which aims at preventing physical and digital security incidents http://www.secfirst.org ...Plug for a very cool Android panic button: Amnesty https://panicbutton.io)...Plugs over :)