Thanks for taking a look! We currently do not have support for free-form drawing. We understood that this could be a valuable feature, but decided on not including it for now to give better access to other symbols that may be more commonly used. (eg. rectangle, circle, database etc.) We found in our experience, most software developers either don’t have a tablet, or don’t use it regularly for work.

Thanks for bringing this point up though! Curious as to what your use case is when thinking about using our app? We're still not 100% sure on the most useful symbols/tools to add, so as we get more feedback, we’re happy to look into including free-form drawing.