It has been easy so far using this app! I have found it very useful in keeping up contact between my students/parents as well their teachers during school holidays etc when we are not able see them face2face or hear from each other through traditional methods of communication (e mail).
Also being that they live all over Aus its great seeing how our kids interact within different schools across Australia which can be quite difficult sometimes due do distance issues but happy feet helps us keep connected no matter where your child may attend!! We use at least one video chat per day via mobile device usually just before bed time - makes sure everyone gets home safe :).