Attendance2 is available in the App Store (App Store link for Attendance2). As announced, the introductory price for the first week is $3.99. It will move to the regular price of $4.99 on July 23rd.
There is more information about it here and the start of a FAQ. The main missing feature (compared to the original Attendance app) is the random functionality. I will be working on it soon but also need to start working on my fall classes so I don't know whether I will get it done by the end of August or will have to finish that feature on the weekends this fall.
I also am working on a few more videos showing how to use it and will post those along with the existing videos here.
I hope you find the new app both simpler and more configurable.