

I have a version of Thunder compiled for desktop, and it’s surprisingly easy to change the number of columns for Tablet Mode. There’s probably other places too, but the line I changed (from ‘2’ to ‘4’) is here
Screenshot:
Full-size image link: https://postimg.cc/hzsFj4rj
I realise you might not want to compile your own version, but it suggests that the developers could add ‘number of columns for tablet mode’ option relatively easily.
Sorry. That’s my bot. There’s comments in the latest post it made about why it died (the SD card on which it was running went read-only). If it’s not pissing it down, and the thought of it all doesn’t seem overwhelming, I’ll mooch into town and see if any cheapie shops are selling 'em.