If free, yes. Paid not yet. – Articulation R & R Blends Review

If paying, the content is VERY (no, really!) limited. Just a handful of words for each r blend, for example. Nonetheless, the animated graphics are entertaining, so if you can catch this app while it is free and wait for a major update for more continued use, it might be worthwhile.
Review by specialappssk on Articulation R & R Blends.