I love that it is easy to use once setup properly for an employee's device (or devices) as well has providing security of data when needed with encryption at rest/in transit! The only downside would be if there was not enough storage available or too much space used by another app - but this isn't really something they are able address easily due to how mobile phone OS works nowadays.
We have found we don' t need anything else anymore since implementing FamiC into our fleet management system which allows us now to track any vehicle within reach using GPS tracking from anywhere around world without having physical access just like before.