The meeting is at The Fountain on Regent Street next Tuesday from 7pm. You can find the details here: http://www.meetup.com/Cambridge-Mobile-App-Group/events/217383792/ You are welcome to just come along, but I recommend that you sign up and "RSVP" because that makes it easier for people you meet to find and contact you afterwards.
As you can see, our focus (for speakers) is going to be on mobile health apps. I don't know what you are working on, but at the very least you can tell everyone what you are doing during the start of the meeting when we go around the room introducing ourselves. Everyone gets 30 seconds to tell everyone their name and their interests/projects in mobile apps. The focus on mobile health is likely to bring along more people with that interest, but there will likely be plenty of others with broader app design, development and marketing interests.
I won't post my contact details in public, but here is what I would otherwise have said through meetup.com messaging.
I don't personally have anyone to recommend, but if you sign up to the Cambridge Mobile App Group on www.meetup.com/Cambridge-Mobile-App-Group you can then post what you are looking for on the group Message Board (under the Discussions menu). A lot of the 650+ people in the group are subscribed to get an email when new posts appear. You are also welcome to come along to our meeting next Tuesday and chat with me and others.