The biggest problem with this app is that I have 3 kids and 1 iPad, and they all fight over the iPad so they can use it! My 4.5 year old already knows his letters but enjoys tracing them anyway, whereas my 19 month old and 3 yr old are actually learning from it.
I debated between getting this and alpha writer, but at 99 cents each I decided to get both. They compliment each other; this app is better suited for younger kids, whereas alpha writer is better suited for older kids. That said, this app seems more solid than alpha writer.
Update: I was not aware that this app also supports French! Our kids are learning French and Spanish at home so this is incredibly useful for us. Would love to see a spanish version as well!
guarever con esto about Montessorium: Intro to Letters