Mockup - UI/UX Design

I have subscripted, and I need the rotation. I think it's more important.

Been trying my hardest to figure out how exactly this app works, I love that its on iPad & Mac and can easily swap between the two to make wireframes. For the life of me I can’t figure out how to round corners or make rounded rectangles. Is something like this just not possible in the current app?

As a UI/UX designer I have been looking for a way to transition to using my iPad to sketch out my ideas and process. Evaluated many options and there are plenty of options out there to satisfy. But this app has provided the built in templates for devices and simplicity of tools that fulfilled my intention of replacing my actual sketchbook and still feel like I am using it. There is plenty of room for improvements and growth that I hope the developers continue to work on. But for my creative flow it is the perfect solution in support of my process. One bad experience - I had worked on sketches on my iPad and later open the app on my Mac where it idicated there was an update. I ran the update and when I opened the file to continue working all my sketches where gone!! The artboards added to do the sketches where still in file but the content deleted. When i went to check the backup there was no backup saved with that version eventhough it was from the previous day. :-(