[illiarian]

I tried to use RaspberryPi last year. Quite a few apps weren't available for it because there are no ARM versions.

Can't remember which (calibre was one of them, maybe?), but it was enough for me to reconsider using it

[sleepycatgirl]

IIRC Calibre supports ARM architecture since 6.0 release, which was July 2022

[illiarian]

It was probably not available at the time I needed it :)