Sensors and layout for iOS developing

Hi, I’m Matteo and I’m new of this forum. I’m looking for using Thunkable at school, but I’m not able to find orientation sensor inside cross platform. Is a limitation in iOS developing?
Second question…how can I put a button in the top of the screen? Is there a coordinate system like in standard android platform?
Thanks a lot

A post was merged into an existing topic: [Superpost] Questions about Screen Orientation