Stop-motion animation app for ipad

[FreezerBird]

Any recommendations?

DS (12 just before Christmas) would love this I think. I'm thinking particularly as a way of extending the lego years - he still happily plays with lego but I don't know how long this will last.

If we can get him making little films of his lego creations doing things, I think he'd a) have a blast b) play with lego for a bit longer and c) it would get him to channel some of his creativity into thinking about stories and stuff which I think would also be sneakily educational. Surely a winner.

Any experience or recommendations?

Thanks

Bumping for the evening crowd...!

Yes my DC have just started making animations, we've been using an app called stop motion, but there's also one called lego movie.
The big downside is the amount of space it takes! My iPad has been completely filled up (have 6 or 7 couple of minute long movies on there) and I haven't looked into how to save the movies so they take up less space yet.
They are great fun though