Hello priatezeta,
the one I liked the most is Busuu, its really complete. I like it a lot for those who speak another origin language and want to learn Spanish. To teach my 8 monts baby his own language its a little complicated. The other ones have many activities to reinforce that are great, I will use them when my son is older.
Thank you! it is exactly what I was looking for... you've been so kind!
Janette