An app for forming letters

[oinkment]

Does anyone know of an app that children can use to learn to form their letters in the right way?

We have a fun maths one where they write numbers in the sand. I would like something similar for the alphabet.

I used this one: itunes.apple.com/gb/app/intro-to-letters-by-montessorium/id387232375?mt=8 and DD2 liked it quite a lot.

I have one that does cursive with phonics, with letter layering etc it's called abc joined up and it is very good (developed by a primary school teacher)

Thank you both. I will look them both up.