Keeping tabs on your brood this Halloween? Sure, you could use Apple’s Find My Friends. But it doesn’t have as many cool features as these two new apps, and it also can’t track Android phones — while these two apps can.

Moxtra is a great, free app that allows groups of users to collaborate using files — video clips, images, PDFs — that they’ve stored in virtual notebooks; some collaboration can even be conducted in realtime.

Back in January, when Moxtra launched, I described the app as a sort of Evernote-Pinterest blend. Now there’s even more blending with the former, because Evernote has added Moxtra integration.