Like other users have said

Alerting my companions once the GPS says Ive reached my destination okay is completely different from actually being inside with the doors locked. Being on my drive way is not inside and safe.
Also, the 15 seconds it allows you to click the Im okay button is useless. An attacker could easily turn it off. This app needs a four digit password in order to turn off the alert/tracking/stop companion all together.
Other than that its a great app with amazing potential.

MzBree53 about Companion: Personal Safety