Since I never see this one mentioned... let me mention:
I use Perfect Keyboard, the only decent split keyboard for landscape use I've found so far. Very customizable.
Am I missing better options out there? I imagine you don't use Thumb Keyboard in landscape, right?
I think it is personal choice; what you like and works for you
Thumb Keyboard is great for me and I use it both landscape and portrait. Landscape it splits for ease of use with thumbs, I guess that's why they call it thumb keyboard right
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