Hey,
I was going through my project fixing up any memory leaks and I found one in your project.
$ionicModal.fromTemplateUrl('ionic-datepicker-modal.html', {
scope: scope,
animation: 'slide-in-up'
}).then(function (modal) {
scope.modal = modal;
});
The modal attached to scope needs to be cleaned up when the scope is destroyed.
scope.$on('$destroy', function() {
scope.modal.remove();
});
Just put this below that piece of code and it'll fix the memory leak.