PLAYSAY: Acquired by Berlin-based Babbel; terms of the deal remain undisclosed. The two companies were founded in 2008 to develop mobile language learning tools, although they focused on different markets (PlaySay on the U.S., Babbel on Europe). PlaySay founder and CEO Ryan Meinzer will act as "strategic advisor" for Babbel while joining the Heroku team for his full-time gig. The SF-based company had previously raised a total of $820K from the likes of Novak Biddle. More details in the press release.