How are the android apps like talking carl and talking tom cat developed?

Question

I'd like to write an app like talking carl / talking tom cat but was wondering how they are developed?

• Are they animated on the fly using 3d? The general actions dont seem to be, they look like a series of movies being played?

• If this is the case, how is the movement of the mouth animation done?

Answer 1

I can't give an authoritative answer, but it seems to be composed of pre-rendered 3d images. The mouth animation is done simply by swapping images. You will notice that the cat is always in the same position when it talks.