With more features being added to our app, it becomes more challenging to design for both landscape AND portrait, while trying to maintain optimal layouts for both cases. Often than we expect the layout needs to be slightly different when you rotate between portrait and landscape.
I've come across apps that only stick to one layout, either portrait or landscape.
what's really the benefit of designing for 2 layouts? most users won't rotate their tablet screens so often and it might be even annoying the layout accidently change when using the app while traveling for instance.