Title: Frustrating
I took a chance on this app since it was only a $1.99, but I wouldn't put this app back on my pen if Livescribe paid me a $199.99. It is sooooo frustrating, and I can't believe any reputable company would actually try to collect money for such a garbage app. The person that gave this app a five star review has to be a livescribe employee.

Title: Draw Lines Before Atomic Symbols
To avoid creating disconnected structures and to make sure that bonds are long enough to be differentiated from letters, you must draw a line (bond) before adding atomic symbol on top of it. You don’t have to draw all the bonds first but the drawing sequence is line, atomic symbol, line, atomic symbol, etc. This is why the previous reviewer received the “No bond?” message if he or she drew C, H, O or N before a line, and drawing the line after the letters only seemed to recognize the line, C2H6, ethane. If you have any questions please contact info@intergrader.net.