The KO in Koreader was originally for Kobo though ofc now it can run elsewhere. :) I started Using it on a Kobo Aura but now I use a Boox Onyx which just runs

The KO in Koreader was originally for Kobo though ofc now it can run elsewhere. :) I started Using it on a Kobo Aura but now I use a Boox Onyx which just runs the Android version of Koreader installed via f-droid or side loaded APK.