A bit paranoid, in anticipation of a long trip abroad with very young children, I wanted something that would allow me to secure myself in case they would escape my supervision. I do have an android device, which is not part of the list of incompatible and that the recommended version. Well impossible to synchronize the wiki and my smartphone. My device is "not part of those most sold in France" and therefore no hope that he will ever be otherwise. Moreover, geolocation mentions only where the smartphone and the wiki have been in contact the last time. That is, if the wiki away from the smartphone, damn it. Basically, this is useless.