iOS and Android SMS app

I need an iOS and Android app under my own name on the istore and google store. HOW IT WORKS The beacon is in the pocket. its a safety feature. If I feel threat then I can press the beacon and a text message is sent to someones phone, e.g. 'please meet me' with the map link where I am. The person who received the SOS can then real time see me on a map to locate me. I have a beacon I can send and prototype design.