This personal safety service doesn't even need a smartphone. Sign up on their website, add one or more emergency contacts and you'll have a way to feel safe on your late night walk home. The user texts Kitestring with a time frame and receives a text checking up on them when the time runs out. Should you fail to reply within five minutes, it sends a text to a friend asking that they call you immediately. Alternatively the bSafe app allows friends to track you by GPS so you can have a virtual companion to accompany you. It also doubles as a fake call app allowing you to bail on disastrous dates.

kitestring.io