Thank you for your interest in the Check Out a Librarian app. Unfortunately, the blog post announcing this app is dated April 1, 2017, and there is no such app that I am aware of. Although maybe it is a good idea and someone really should work on it.
In the meantime you can schedule an appointment the old fashioned way by going to https://ubalt.mywconline.com/ and selecting “Research Support”. If you cannot make any of the times listed on the schedule, send an email to firstname.lastname@example.org with a brief description of the type of support you would like and some times that would be convenient. It turns out that librarians really like helping people find information, so we will work something out.