It has a number of benefits over a normal keyboard:
- No need for autocorrect since the buttons are so large that it’s hard to accidentally press the wrong one
- It’s symmetrical so both thumbs can type any letter, so you can type faster, in fact the world record typing speed on a phone was set on a one-handed version of this, i’m sure with the two-handed you can go even faster
- Pretty much everything I need can be hit without switching to another layout (no need for a symbols page)
- The other features of the keyboard are easily accessible, like, copy/paste/select all/undo/redo etc.
It’s awesome, it’s foss, and not a keylogger like most keyboards.
I use opencalc, stick to FOSS software as much as humanly possible.