what parenting apps are there?

[smokey]

Can anyone reccomend some handy free android apps for parants or parenting, Im after a decent calender type one for putting all his differant play schem activities in for all the differant groups in my area so on any day I can just see what ones are on at a glance.
There was an article a little while back but I cant find it now.

So just any apps people find usefull when it comes to parenting im curious whats out there (plus I want to fiddle with things for my new phone)